Explosive Flower Growth, Maximum Density & Heavyweight Harvests

Push your plants into peak production with Growth Technology GT Super PK.

A high-performance phosphorus (P) and potassium (K) bloom booster engineered to increase flower size, density, and final harvest weight.

Designed for the critical mid-to-late flowering stage, this concentrated PK additive delivers the precise nutrients your plants need to stack flowers faster, grow denser buds, and maximise yield potential.

Why GT Super PK Delivers Bigger, Denser Harvests

High-PK Flowering Power — Provides elevated phosphorus and potassium levels exactly when plants demand it most.
Drives the Swell Phase — Triggers rapid flower expansion, resulting in heavier, tighter, more compact blooms.
Boosts Energy (ATP Production) — Phosphorus fuels plant metabolism, accelerating flower growth and cell division.
Enhances Sugar, Oil & Terpene Production — Potassium improves carbohydrate transport, boosting flavour, aroma, and resin output.
Prevents Yield Limitations — Ensures plants never stall during peak flowering due to nutrient deficiencies.

How to Use GT Super PK

When to Use: Mid-to-late flowering stage

Dosage: 1–2ml per litre of nutrient solution

Application: Add alongside your base nutrients

Suitable For: Hydroponics (DWC, NFT, drip) · Coco Coir · Soil

Pro Tip: Start at a lower dose and gradually increase while monitoring EC — this helps you dial in the perfect level for maximum density and resin production.

Frequently Bought Together

GT Silica — strengthen stems and plant structure throughout veg and early flower before adding GT Super PK in mid-bloom
Terra Aquatica Final Part — follow GT Super PK with Final Part in the last 7–10 days for a complete end-of-cycle ripening finish
Rock Resinator — stack with GT Super PK for maximum resin production and bud hardening alongside the PK boost

Frequently Asked Questions

When do I start using Growth Technology GT Super PK?

Introduce Growth Technology GT Super PK at the start of the flowering or fruiting stage — typically when you switch your light cycle to 12/12 for photoperiod plants or when pre-flowers appear on autoflowers. Early introduction primes the plant for heavy flower production. Some growers start Growth Technology GT Super PK during the final 1–2 weeks of vegetative growth to front-load the transition. Follow the feeding chart for your specific crop.

Can I use Growth Technology GT Super PK alongside my base nutrient?

Yes — Growth Technology GT Super PK is designed to complement your existing base nutrient. Add your base nutrient first, then add Growth Technology GT Super PK and any other additives. Always check total EC after mixing to ensure you are not overfeeding. If EC is too high, reduce your base nutrient dose proportionally rather than reducing Growth Technology GT Super PK — the booster's specialised chemistry should remain at full dose for best results.

Will Growth Technology GT Super PK affect my nutrient solution's pH?

Adding Growth Technology GT Super PK may shift your reservoir pH slightly. Always measure and adjust pH after adding all nutrients and additives. Target pH 5.8–6.2 for hydroponics and coco, 6.0–6.5 for soil. Use a calibrated pH meter and pH Up or pH Down solution to dial in your final reading.

Does Growth Technology GT Super PK ship fast within Australia?

Yes — Growth Technology GT Super PK ships from our Australian warehouse with fast tracked delivery Australia-wide. Most east coast orders arrive within 2–5 business days. WA, NT, and TAS orders typically arrive within 5–12 business days.