Root Builder by Green Planet — Beneficial Bacteria Root Zone Inoculant
GP-NUT-ROOTBUILDER-1L
Pairs well with
Root Builder is Green Planet's root zone inoculant — a live culture of two beneficial bacteria, Bacillus licheniformis and Bacillus subtilis, at 100 million CFU per mL each. Put simply, it seeds your root zone with the good bugs. They break fertiliser down into forms the plant can actually take up, hold moisture and structure in the media, and crowd out root-zone pathogens. Run it in with your feed at any stage of growth, in soil, coco or run-to-waste hydro.
Specifications
- Keep it out of recirculating setups. The bacteria are alive and will multiply in a standing reservoir — Root Builder is built for soil, coco and run-to-waste, not recirc.
- Add it fresh each feed rather than pre-mixing a batch that sits for days. Live cultures work best going straight in.
- Chasing root rot? Sterilise first with an oxygen additive, then reintroduce Root Builder once the reservoir is clean — never run the two together.
How to Use Root Builder
Pairs Well With
Green Planet's base nutrient — Root Builder makes more of every feed it goes in with.
GP3 GrowVeg-stage base of the 3-part — pair with Root Builder for a strong start.
Coco CoirInoculating fresh coco gives roots a living head start in an inert medium.
Frequently Asked Questions
Can I use Root Builder in a recirculating hydro system?
No. Green Planet advises against it — the live bacteria multiply in a standing reservoir and take it over. Root Builder is made for soil, coco and run-to-waste systems, not recirc.
When in the grow can I use it?
Yes — any stage. Root Builder promotes a healthy root zone from propagation right through flowering, so you can run it at every feed across the whole cycle.
What does Root Builder actually do?
It seeds two beneficial Bacillus strains into your root zone. They break fertiliser into plant-available forms, improve soil structure and moisture retention, and defend against root-zone pathogens — so your plant gets more from its feed and holds a cleaner rhizosphere.
Does it work alongside my normal nutrients?
Yes. It's designed to go in with your regular nutrient solution at 1.25 mL per litre. Avoid mixing it with sterilising agents like hydrogen peroxide, which will kill the bacteria.
Which size should I buy?
At 1.25 mL per litre the 1L suits a home grower running a tent or two. The 5L is the value pick for regular use, and the 20L is aimed at commercial rooms going through it season after season.
Select Size
Feed the Roots, Not Just the Plant
Live beneficial bacteria for a stronger root zone. Free shipping over $499*.