Bio-Bloom by BioBizz — Organic Liquid Flowering Fertiliser for Soil & Coco
SG-S1978
100% organic complete flowering fertiliser: nitrogen, phosphorus and potassium with enzymes and amino acids. 2–4ml per litre from the first week of flower to harvest, run alongside Bio-Grow.
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Pairs well with
Bio-Bloom is the flowering half of the BioBizz feed: a 100% organic complete liquid fertiliser that brings nitrogen, phosphorus and potassium together with enzymes and amino acids, formulated to work with the biology in your substrate rather than around it. Phosphorus and potassium drive the forming and growing of bulbs, calyces and petals, and BioBizz notes that potassium works with the plant's day-and-night rhythm to help trigger the flowering process in the first place. It runs from the start of flowering to harvest at 2–4ml per litre, alongside Bio-Grow rather than instead of it, in soil or coco, and comes in 500ml, 1L and 5L.
Specifications
Grower's Tip
- Start when the flowers start, not before. Bio-Bloom has no propagation or veg dose on either AU chart. Week 1 of flowering is week 1 of Bio-Bloom.
- Keep Bio-Grow in the can. BioBizz runs Bio-Grow through flower because it carries the food for your beneficial microbes. Bio-Bloom on its own is half a feed program.
- Match the chart to the medium. On coco or light mix Bio-Bloom starts at 2ml per litre and peaks at 4ml in weeks 4–6. On fertilised substrate it starts at 1ml and finishes at 4ml in weeks 6–8, because the pre-charged soil is doing some of the early work for you.
- Dose by ml, not EC. An EC meter reads mineral salts and this is an organic extract, so the number will be low and misleading. 3ml per litre is 30ml in a 10-litre can.
- Top-Max is the booster, Bio-Bloom is the feed. If you only buy one bottle for flower, it is this one. Top-Max goes on top of it, not in place of it.
- Shake, measure, stir. It settles, so shake before you pour, and mix the can through so the first pot and the last pot get the same feed.
- Plain water in week 9. The AU chart finishes with a week of nothing added, which flushes what is left in the substrate before harvest in week 10.
- Rinse your gear. Organic feeds leave residue in cans and drip lines. A quick rinse after each feed keeps the lines clear and the smell down.
How To Use It
Pairs Well With
Stays in the feed through flower. Bio-Grow carries the sugar beet extract that feeds your substrate's microbes; Bio-Bloom feeds the flowers.
Top-Max by BioBizzThe flowering stimulator that sits on top of Bio-Bloom. Humic and fulvic acids, 1ml per litre rising to 4ml before the flush.
Bio-Heaven by BioBizzAmino acid energy booster that peaks at 5ml per litre in flowering weeks 4–5, right when Bio-Bloom is at full rate.
Alg-A-Mic by BioBizzCold-pressed seaweed for stress recovery and green leaves through flower. Low NPK, so it does not throw the feed out.
Bluelab pH PenBioBizz says pH adjustment is essential on coco. One waterproof pen, no guessing.
Bloom Boosters RangePK boosters, carbs, ripeners and stimulators to build out the flowering feed.
Frequently Asked Questions
What is BioBizz Bio-Bloom?
Bio-Bloom is BioBizz's 100% organic complete liquid flowering fertiliser. It contains what BioBizz calls the optimum blend of nitrogen, phosphorus and potassium, along with enzymes and amino acids, all working with the substrate rather than against it. The composition is built to produce a strong-stemmed, vigorous flowering plant, and it is the feed BioBizz runs from the first week of flower to harvest.
What is the Bio-Bloom dose rate?
BioBizz recommends approximately 2–4ml per litre of water. The Australian schedule gives the week-by-week numbers: on coco or light mix it runs 2, 3, 3, 4, 4, 4, 3, 3ml per litre across flowering weeks 1–8; on fertilised substrate it runs 1, 2, 3, 3, 3, 4, 4, 4. Week 9 is plain water and week 10 is harvest.
When do I start Bio-Bloom?
At the start of the flowering period. Neither AU chart gives a propagation or veg dose, so it is not a bottle you need until the plant flips. Bio-Grow and Root-Juice handle veg.
Do I stop Bio-Grow when I start Bio-Bloom?
No. BioBizz runs both together through flowering. The AU schedule carries a note that Bio-Grow contains important food sources for beneficial microbes and should be used through veg AND flowering. Bio-Bloom is the addition to the feed, not the replacement for it.
What is the NPK of Bio-Bloom?
BioBizz states that Bio-Bloom contains nitrogen, phosphorus and potassium with enzymes and amino acids, but does not publish percentages on its current product page or 2026 data sheet, so we do not print a guess. Dose by ml per litre from the schedule.
Is Bio-Bloom organic?
BioBizz lists Bio-Bloom with an Ecocert attestation and Control Union certification as an organic input under the EU regulation and the US National Organic Program, plus Clean Green and EnvirOganic. These are overseas input certifications, not an Australian organic certification, so check with your certifier if that matters for your crop. It carries the BioBizz vegan icon on the AU schedule.
Can I use Bio-Bloom in coco?
Yes. BioBizz describes it as suitable for soil and for enriching a soilless coco medium, and publishes a coco / light mix chart for it. The condition is BioBizz's standard coco note: adjust pH and use an enzyme product. A pH pen, a pH adjuster and an enzyme like Cannazym cover it.
Can I use Bio-Bloom in hydroponics?
BioBizz lists hydroponics as an application for Bio-Bloom, but there is no hydro column on the Australian schedule, so you are off the chart. If you run it in a recirculating system, start at the bottom of the 2–4ml range and keep an eye on the reservoir: organic feeds and standing water need more management than mineral salts do.
Does Bio-Bloom replace a PK booster?
It is the flowering feed, not a PK booster. Within the BioBizz range the stimulator layer is Top-Max, which BioBizz runs on top of Bio-Bloom from week 1. If you want to add a mineral PK booster from another brand, do it modestly: BioBizz's advice across the range is that it is always better to be modest than to add more.
Which size should I buy?
At 2–4ml per litre the 500ml makes 125–250 litres of feed, the 1L makes 250–500 litres and the 5L makes 1,250–2,500 litres. Flowering is eight feeding weeks, so a 500ml comfortably covers a small tent for a cycle and the 5L suits a full room or outdoor beds.
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Feed Flowers The Organic Way
100% organic NPK with enzymes and amino acids. 2–4ml per litre, first flower to harvest.
