{"product_id":"biobizz-top-max","title":"Top-Max by BioBizz — Organic Flowering Stimulator with Humic \u0026 Fulvic Acids","description":"\u003cdiv style=\"font-family: 'Helvetica Neue', Arial, sans-serif; max-width: 860px; margin: 0 auto; color: #1a1a1a;\"\u003e\n\n\u003cp style=\"font-size: 1.05rem; line-height: 1.7; margin-bottom: 1.5rem;\"\u003eTop-Max is BioBizz's 100% organic flowering stimulator, and it does its work through two very old ingredients. The humic acids come mainly from Leonardite, a deposit left by prehistoric trees and vegetation from the Carboniferous period around 300 million years ago. The fulvic acids come from exceptionally rich humate deposits deep in the earth, and their natural electrical charge attracts nutrients and minerals, freeing up calcium, iron and magnesium that were sitting locked in the substrate and stimulating the plant's metabolism. BioBizz lists three results: ingredients that can help increase the actual size and weight of the flower clusters, improved nutrient uptake, and sweeter, smoother-tasting crops. It runs the entire flowering period at 1–4ml per litre, starting low and climbing to 4ml as harvest approaches, before the flush. Available in 500ml, 1L and 5L.\u003c\/p\u003e\n\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem;\"\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eBigger, Heavier Flower Clusters\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eBioBizz's words: ingredients that can help increase the actual size and weight of the flower clusters. It is a stimulator, so it works on top of your Bio-Bloom feed rather than replacing it.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eHumic Acids From Leonardite\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eThe main humic source is Leonardite, prehistoric plant matter laid down 300 million years ago. Humic and fulvic acids together boost the energy in old plant cells and stimulate new ones to form.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eFrees Up Calcium, Iron And Magnesium\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eThe natural electrical charge of the fulvic acids attracts nutrients and minerals, releasing the calcium, iron and magnesium already in the substrate so the plant can actually use them.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eSweeter, Smoother Harvest\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eBetter nutrient flow through flower is why BioBizz says crops grown with Top-Max come out sweeter and smooth-tasting.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003e1ml Rising To 4ml Per Litre\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003e1ml per litre in the first weeks of flowering, climbing to 4ml as harvest approaches and before you flush. The same chart applies on soil and coco.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f4f9f4; border-left: 4px solid #2e5e2e; padding: 1rem 1.2rem; border-radius: 6px;\"\u003e\n\u003cstrong style=\"display: block; margin-bottom: 0.3rem; color: #2e5e2e;\"\u003eCertified Organic Input\u003c\/strong\u003e\u003cspan style=\"font-size: 0.9rem; color: #444;\"\u003eEcocert attested, Control Union certified as an organic input under the EU regulation and the US NOP, plus Clean Green and EnvirOganic. Vegan icon on the BioBizz AU schedule.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eSpecifications\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 2rem; font-size: 0.95rem;\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Top-Max flowering stimulator by BioBizz\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e 500ml, 1L, 5L (BioBizz also makes 250ml, 10L and 20L)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eActive ingredients:\u003c\/strong\u003e Humic acids, mainly sourced from Leonardite; fulvic acids from humate deposits (BioBizz). Full composition and NPK not published on the 2026 data sheet\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e 100% organic flowering stimulator \/ strengthener\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eDose rate:\u003c\/strong\u003e 1–4ml per litre of water. BioBizz: 1ml\/L in the first weeks of flowering, increasing to 4ml\/L as harvest approaches and before flushing\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eAU schedule, both charts (ml per litre):\u003c\/strong\u003e Propagation – · Veg – · Flower wk1–8: 1, 2, 2, 3, 3, 4, 4, 1 · wk9 plain water · wk10 harvest\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWhen to use:\u003c\/strong\u003e Throughout the entire flowering period. BioBizz notes it works especially well combined with BioBizz substrate mixtures\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWhat it does:\u003c\/strong\u003e Can help increase the size and weight of flower clusters; improves nutrient uptake; frees up calcium, iron and magnesium in the soil; sweeter, smooth-tasting crops (BioBizz)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Regular watering and watering systems, indoor and outdoor. BioBizz also lists hydroponics; the AU schedule covers coco \/ light mix and fertilised substrate only\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMakes:\u003c\/strong\u003e At 1–4ml\/L: 500ml makes 125–500 litres; 1L makes 250–1,000 litres; 5L makes 1,250–5,000 litres\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e Ecocert attestation; Control Union certified Organic EU Input; Control Union certified NOP (US National Organic Program) Input; Clean Green certification; EnvirOganic certification — as listed by BioBizz for this product\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eVegan:\u003c\/strong\u003e Carries the BioBizz vegan icon on the AU nutrient schedule\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBarcode (EAN):\u003c\/strong\u003e 500ml 8718403231427 · 1L 8718403231403 · 5L 8718403231441\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSafety:\u003c\/strong\u003e Keep out of the reach of children. Do not swallow. Use following the instructions (BioBizz data sheet)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e BioBizz Worldwide Organics (biobizz.com). Distributed in Australia by Stealth Garden\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eGrower's Tip\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f9a825; padding: 1rem 1.3rem; border-radius: 6px; margin-bottom: 0;\"\u003e\n\u003cul style=\"margin: 0 0 0 1.2rem; padding: 0; font-size: 0.93rem; line-height: 1.7;\"\u003e\n\u003cli\u003eLow and slow. The AU chart runs 1ml per litre in flowering week 1, 2ml in weeks 2–3, 3ml in weeks 4–5 and 4ml in weeks 6–7, then back to 1ml in week 8 and plain water in week 9. The build is the point. Do not open at 4ml.\u003c\/li\u003e\n\u003cli\u003eIt is a stimulator, not a feed. Top-Max improves the uptake of what is already in the pot; it does not supply the NPK. Bio-Bloom is the flowering feed and Top-Max goes on top of it.\u003c\/li\u003e\n\u003cli\u003eHumic acid is dark and it stains. Measure over the sink or a tray, cap it straight away, and do not leave the syringe on the bench.\u003c\/li\u003e\n\u003cli\u003eDose by ml, not EC. An organic humic and fulvic product barely registers on an EC meter, so the reading tells you nothing useful. 2ml per litre is 20ml in a 10-litre can.\u003c\/li\u003e\n\u003cli\u003eShake it first. Humic concentrates settle. Shake, measure, then stir the can through before it goes near a pot.\u003c\/li\u003e\n\u003cli\u003eThe minerals it frees up have to be there to free. On a fertilised substrate or buffered coco they are; on a bare, exhausted mix there is less for Top-Max to work with, which is one reason BioBizz says it works especially well with its own substrates.\u003c\/li\u003e\n\u003cli\u003eWeek 9 is water only. The flush is part of the chart. Top-Max at 4ml in weeks 6–7 then 1ml in week 8 sets the plant up for it.\u003c\/li\u003e\n\u003cli\u003eModest beats more. BioBizz says it across the range: it is always better to be modest than to add more. Stacking a mineral PK booster on top of Top-Max and Bio-Bloom is where organic grows go wrong.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eHow To Use It\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e1\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eStart in flowering week 1.\u003c\/strong\u003e Top-Max has no propagation or veg dose. The first week of flower is the first week of Top-Max.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e2\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFill the can, pH if you are on coco.\u003c\/strong\u003e BioBizz calls pH adjustment and an enzyme product essential on coco. In soil, fill and go.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e3\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eShake the bottle.\u003c\/strong\u003e Humic concentrate settles. Shake before every pour.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e4\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMeasure 1ml per litre.\u003c\/strong\u003e 10ml for a 10-litre can, 50ml for 50 litres. Use a syringe or measuring cup, not the cap.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e5\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eAdd it to the same can as Bio-Bloom and Bio-Grow.\u003c\/strong\u003e Top-Max rides on top of the feed. Stir everything through before watering.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; border-bottom: 1px solid #edf3ed; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e6\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eClimb the chart.\u003c\/strong\u003e 2ml per litre in weeks 2–3, 3ml in weeks 4–5, 4ml in weeks 6–7, back to 1ml in week 8.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: flex-start; gap: 14px; padding: 12px 0; font-size: 0.93rem; line-height: 1.6;\"\u003e\n\u003cspan style=\"background: #2e5e2e; color: #fff; font-weight: 700; font-size: 0.85rem; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\"\u003e7\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlush and harvest.\u003c\/strong\u003e Plain water only in week 9. Harvest in week 10.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003ePairs Well With\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem;\"\u003e\n\u003ca href=\"\/products\/biobizz-bio-bloom\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eBio-Bloom by BioBizz\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eThe flowering feed Top-Max is designed to sit on. Run both from week 1 of flower, Bio-Bloom as the feed and Top-Max as the stimulator.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/biobizz-bio-grow\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eBio-Grow by BioBizz\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eStays in the feed through flower on the BioBizz chart. Its sugar beet base feeds the microbes that Top-Max's humic and fulvic acids work alongside.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/biobizz-bio-heaven\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eBio-Heaven by BioBizz\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eAmino acid energy booster that peaks at 5ml per litre in flowering weeks 4–5, while Top-Max is climbing to its own peak.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/biobizz-alg-a-mic\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eAlg-A-Mic by BioBizz\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eCold-pressed seaweed for stress recovery through flower. Low NPK, so it sits alongside Top-Max without overfeeding.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/products\/great-white-mycorrhizae-by-plant-success\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eGreat White Mycorrhizae\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eInoculate at transplant and the fungal network is in place by the time Top-Max starts freeing up minerals for it to deliver.\u003c\/p\u003e\u003c\/a\u003e\n\u003ca href=\"\/collections\/bloom-boosters\" style=\"text-decoration: none; color: inherit; background: #f4f9f4; border: 1px solid #c8dfc8; padding: 1rem; border-radius: 6px; display: block;\"\u003e\u003cstrong style=\"color: #2e5e2e; display: block; margin-bottom: 0.3rem;\"\u003eBloom Boosters Range\u003c\/strong\u003e\u003cp style=\"font-size: 0.85rem; margin: 0;\"\u003eOrganic and mineral flowering boosters, carbs and ripeners, side by side.\u003c\/p\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"margin-bottom: 2rem;\"\u003e\n\u003csummary style=\"cursor: pointer; border-bottom: 2px solid #2e5e2e; padding-bottom: 0.4rem; margin-bottom: 1rem;\"\u003e\u003ch2 style=\"font-size: 1.1rem; font-weight: 700; margin: 0; display: inline;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\u003c\/summary\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat is BioBizz Top-Max and what does it do?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eTop-Max is a 100% organic flowering stimulator. BioBizz gives three reasons to use it: it contains ingredients that can help increase the actual size and weight of the flower clusters, it improves nutrient uptake, and plants grown with it produce sweeter, smooth-tasting crops. It works by freeing up calcium, iron and magnesium in the soil, which stimulates the plant's metabolism.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat is the Top-Max dose rate?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003e1–4ml per litre of water across the flowering period. BioBizz advises 1ml per litre in the first weeks of flowering, increasing to 4ml per litre as harvest approaches and before flushing. The Australian schedule spells it out: 1, 2, 2, 3, 3, 4, 4, 1ml per litre across flowering weeks 1–8, then plain water in week 9. The same numbers apply on coco \/ light mix and on fertilised substrate.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat are humic and fulvic acids, and why Leonardite?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eHumic and fulvic acids are the organic acids left behind when plant matter breaks down over geological time. BioBizz's main humic source is Leonardite, a deposit formed from prehistoric trees and vegetation that flourished in the Carboniferous period around 300 million years ago. The fulvic acids come from rich humate deposits deep in the earth. BioBizz says their natural electrical charge attracts nutrients and minerals in the soil, and that together they boost the energy in old plant cells while stimulating new ones to form.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhen do I start Top-Max?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eIn the first week of flowering, at 1ml per litre. There is no propagation or veg dose on the BioBizz schedule. It then runs every feeding week of flower until the flush.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDo I use Top-Max with Bio-Bloom or instead of it?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eWith it. Bio-Bloom is the flowering fertiliser; Top-Max is the stimulator that improves uptake of what Bio-Bloom and the substrate supply. BioBizz runs Bio-Grow, Bio-Bloom and Top-Max together through flower, with Bio-Heaven and Alg-A-Mic as the optional boosters.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eCan I use Top-Max in coco or hydroponics?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eCoco, yes: the AU coco \/ light mix chart includes it, with BioBizz's standard coco condition of adjusting pH and using an enzyme product. BioBizz also lists hydroponics as an application, but there is no hydro column on the Australian schedule, so in a recirculating system start at 1ml per litre and watch the reservoir.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eDoes Top-Max really change the taste?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eBioBizz's claim is that improved nutrient flow through flower produces sweeter, smooth-tasting crops. It is a manufacturer claim about the process, not a guarantee about your harvest, and your drying and curing will have at least as much say in the result.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eIs Top-Max organic?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eBioBizz lists Top-Max with an Ecocert attestation and Control Union certification as an organic input under both the EU regulation and the US National Organic Program, plus Clean Green and EnvirOganic. Those are overseas input certifications rather than an Australian organic certification. It carries the BioBizz vegan icon on the AU schedule.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhat is the NPK of Top-Max?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eBioBizz does not publish an NPK analysis for Top-Max on its product page or 2026 data sheet. It is sold as a stimulator rather than a fertiliser, and its description is about humic and fulvic acids freeing up minerals, not supplying them. Dose by ml per litre, not by EC.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 0.8rem; border: 1px solid #e0e0e0; border-radius: 6px; padding: 0.8rem 1rem;\"\u003e\u003csummary style=\"font-weight: 600; cursor: pointer;\"\u003eWhich size should I buy?\u003c\/summary\u003e\u003cp style=\"margin: 0.6rem 0 0; font-size: 0.93rem; line-height: 1.6;\"\u003eAt 1–4ml per litre over eight flowering weeks, the 500ml covers a small tent for a cycle with room to spare, the 1L makes 250–1,000 litres of solution, and the 5L is for a full room or a serious outdoor season.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/details\u003e\n\n\u003cdiv style=\"margin: 2rem 0 0;\"\u003e\n\u003cp style=\"font-size: 0.95rem; font-weight: 700; margin-bottom: 0.75rem; color: #1a1a1a;\"\u003eSelect Size\u003c\/p\u003e\n\u003cdiv style=\"display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1.5rem;\"\u003e\n\u003cbutton data-variant-id=\"52883772801322\" style=\"padding: 0.6rem 1.4rem; border: 2px solid #2e5e2e; border-radius: 6px; background: #2e5e2e; color: #fff; font-size: 0.95rem; font-weight: 700; cursor: pointer;\"\u003e500ml\u003c\/button\u003e\n\u003cbutton data-variant-id=\"52883772834090\" style=\"padding: 0.6rem 1.4rem; border: 2px solid #2e5e2e; border-radius: 6px; background: #fff; color: #2e5e2e; font-size: 0.95rem; font-weight: 600; cursor: pointer;\"\u003e1L\u003c\/button\u003e\n\u003cbutton data-variant-id=\"52883772866858\" style=\"padding: 0.6rem 1.4rem; border: 2px solid #2e5e2e; border-radius: 6px; background: #fff; color: #2e5e2e; font-size: 0.95rem; font-weight: 600; cursor: pointer;\"\u003e5L\u003c\/button\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background: #1c3a1c; color: #fff; padding: 2rem; border-radius: 10px; text-align: center; margin-top: 0;\"\u003e\n\u003ch2 style=\"color: #fff !important; margin: 0 0 0.5rem; font-size: 1.3rem;\"\u003eGive Your Flowers Something Ancient\u003c\/h2\u003e\n\u003cp style=\"color: #aed1ae !important; margin: 0 0 1.5rem; font-size: 0.95rem;\"\u003eHumic and fulvic acids from Leonardite. 1–4ml per litre, first flower to flush.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap;\"\u003e\n\u003cbutton id=\"btn-add-to-cart\" style=\"background: #b67317 !important; color: #fff !important; padding: 0.85rem 2rem !important; border: none !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 700 !important; cursor: pointer !important;\"\u003eAdd to Cart\u003c\/button\u003e\n\u003ca href=\"\/collections\/biobizz\" style=\"background: transparent !important; color: #fff !important; padding: 0.85rem 2rem !important; border: 2px solid #fff !important; border-radius: 6px !important; font-size: 1rem !important; font-weight: 600 !important; text-decoration: none !important; display: inline-block !important;\"\u003eBrowse The BioBizz Range\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  var btn = document.getElementById('btn-add-to-cart');\n  if (!btn) return;\n\n  var selectedVariantId = '52883772801322';\n\n  var sizeBtns = document.querySelectorAll('button[data-variant-id]');\n  sizeBtns.forEach(function(b) {\n    b.addEventListener('click', function() {\n      selectedVariantId = this.getAttribute('data-variant-id');\n      sizeBtns.forEach(function(ob) {\n        ob.style.background = '#fff';\n        ob.style.color = '#2e5e2e';\n        ob.style.fontWeight = '600';\n      });\n      this.style.background = '#2e5e2e';\n      this.style.color = '#fff';\n      this.style.fontWeight = '700';\n    });\n  });\n\n  btn.addEventListener('click', function() {\n    fetch('\/cart\/add.js', {\n      method: 'POST',\n      headers: {'Content-Type': 'application\/json'},\n      body: JSON.stringify({id: parseInt(selectedVariantId, 10), quantity: 1})\n    }).then(function(response) {\n      return response.json();\n    }).then(function(data) {\n      if (data.status \u0026\u0026 data.status !== 200) { throw new Error(data.description); }\n      btn.textContent = 'Added to Cart';\n      btn.style.background = '#2e5e2e';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2000);\n    }).catch(function() {\n      btn.textContent = 'Error — Try Again';\n      btn.style.background = '#c0392b';\n      setTimeout(function() {\n        btn.textContent = 'Add to Cart';\n        btn.style.background = '#b67317';\n      }, 2500);\n    });\n  });\n});\n\u003c\/script\u003e","brand":"BioBizz","offers":[{"title":"500ml","offer_id":52883772801322,"sku":"SG-S1979","price":34.95,"currency_code":"AUD","in_stock":true},{"title":"1L","offer_id":52883772834090,"sku":"SG-S1973","price":59.95,"currency_code":"AUD","in_stock":true},{"title":"5L","offer_id":52883772866858,"sku":"SG-S1985","price":239.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/1573\/3290\/files\/BioBizz-Top-Max-1L.jpg?v=1791450409","url":"https:\/\/www.thegrowguys.com.au\/products\/biobizz-top-max","provider":"The Grow Guys","version":"1.0","type":"link"}