Green Planet Karbo Boost — 600g

Green Planet Karbo Boost — 600g

Karbo Boost is Green Planet's carbohydrate-based supplement — feeds the beneficial microbial life in your root zone while providing plant-available sugars that support flowering. The soluble powder format dissolves quickly and cleanly. Use throughout the grow cycle to maintain a thriving rhizosphere, then increase dosage during flowering when energy demands peak. Available from 60g trial size to 11.34kg bulk.

Why growers choose Karbo Boost:

• Feeds beneficial microbes — carbohydrate source sustains healthy root-zone biology
• Supports flowering energy demands — plant-available sugars when plants need them most
• Fully soluble powder — clean dissolution with no residue
• Use throughout the grow cycle — veg through flower, ramp up in bloom
• Compatible with any nutrient line — works alongside GP3, Dual Fuel, or third-party feeds
• Bulk sizes available — 60g trial through 11.34kg commercial

Who it's not for:

Karbo Boost is a carbohydrate supplement, not a base nutrient or PK booster — it won't replace proper feeding. For sterile hydro systems where you're intentionally keeping the root zone microbe-free, sugar supplements can encourage unwanted microbial growth; use with caution in recirculating DWC or NFT. For purely biological microbial inoculation (actual microbes rather than food for them), pair Karbo Boost with Root Builder or a dedicated microbial product. Dissolve fully before adding to reservoir — undissolved powder can clog drippers.

In stock now — ships same working day from our Staffordshire warehouse with free UK delivery over £100. Pick up in-store at our Stone shop (ST15 0SR) if you're local, or click & collect at checkout.