Professor’s Nutrients Feed Chart: The Ultimate Hydroponic Guide for Bigger Yields in 2025
Still guessing which bottle to pour—or when? Stop the nutrient roulette. Below is your definitive, start-to-finish roadmap for explosive growth with Professor’s Nutrients. Whether you run coco, rockwool, DWC or a hybrid setup, this guide distills 20 years of Aussie R&D into one crystal-clear plan. Ready to harvest weight, flavour and bag appeal that shout “pro-grower”? Let’s dive in.
Meet Professor’s Nutrients & Why It Wins
- Lab-grade inputs, zero fillers: every bottle is packed with chelated minerals for rapid uptake.
- One base, two parts: Original Part A & B run seamlessly from seedling to final flush—just tweak the dose.
- Eco-conscious credentials: certified organic options mean cleaner produce and a lighter footprint.
- Versatile: compatible with drip, flood-and-drain, recirculating DWC and living-media hybrids.
The Line-Up Explained
Core Nutrition – Original Part A & B
Your “canvas.” Add supplements first, then top up with A & B to hit target EC.
Root Establishment
- Cloning Accelerator – vitamin-rich foliar mist for rock-solid cuttings.
- Starter Soak – gentle NPK + kelp dunk that pre-charges cubes.
- Go Roots – systemic fungicide with humic/fulvic to explode feeder roots.
Vegetative Acceleration & Plant Health
- Grow Fast – high-N + Ca/Mg to pack on biomass fast.
- Go Green – instant Cal-Mag-Fe fix for soft-water or coco growers.
Early Bloom Builders
Flower Boost – PK 10-8.7 shot that triggers explosive bud set.
Peak Bloom & Ripening
- Extreme Boost – ultra-concentrated PK powder for density and brix.
- Carbo Boost – simple sugars that feed microbes and swell essential oils.
Finishing & Flushing
Ultra Flush – chelates residual salts for a clean, terpene-rich finish.
Integrated Feeding Schedule
Tip: Monitor runoff and adjust ±0.2 mS/cm. Keep pH 5.5–6.5 (hydro/coco). Change and rinse reservoirs weekly.
| Stage | Week |
A & B (mL / L) |
Go Roots | Go Green | Grow Fast | Flower Boost | Extreme Boost | Carbo Boost | Ultra Flush | Target EC |
|---|---|---|---|---|---|---|---|---|---|---|
| Propagation | 1-2 | — | — | — | — | — | — | — | — | — |
| Veg | 1 | 2.5 | 0.25 | 2 | — | — | — | — | — | 1.8+ |
| 2 | 2.2 | 0.25 | 2 | 2.5 | — | — | — | — | 2.0 | |
| 3-5 | 2.2 | 0.25 | 2 | 2.5 | — | — | — | — | 2.0 | |
| Bloom | 1-4 | 2.6 | 0.25 | 2 | — | 2 | — | — | 3 mL/L (Wk 1) | 2.0 |
| 5 | 2.6 | 0.25 | 2 | — | 2 | — | — | — | 2.2 | |
| 6-7 | 3.4 | 0.25 | 2 | — | — | 0.5 g/L | 2 | — | 2.4 | |
| 8 | 2.0 | 0.25 | — | — | — | — | 2 | — | 1.8 | |
| Flush | 9 | Water only | — | — | — | — | — | — | 3 mL/L (all week) | 0 |
Pro Tips & Common Pitfalls
- Additives first, bases last. Prevents precipitation and dodgy EC readings.
- Mind the windows. Stop Grow Fast once you flip to bloom; excess N drags through to flowers.
- Dial EC, not bottles. Hungry plants? Bump overall EC 0.1-0.2 instead of over-pouring one additive.
- Keep solution 20–24 °C and aerated. Stagnant, warm soup invites root rot. Go Roots is insurance, not a crutch.
- Flush like you mean it. A full week with Ultra Flush strips hidden salts for terpene-rich buds.
Frequently Asked Questions
How often should I change my reservoir when using Professor’s Nutrients?
Dump, rinse and refill every 7 days to stop nutrient drift and bio-film. Top-ups are fine mid-week, but a full reset keeps ratios on point.
Can I run Original A & B in soil?
Yes—cut the dosage to 50 % and water to 10-20 % runoff to avoid salt build-up.
What pH range works best in coco?
Keep 5.8 – 6.2 for optimal Ca/Mg uptake. Swinging wider invites lockout.
Is Ultra Flush really necessary if my runoff EC is low?
Absolutely. It chelates stubborn chloride and potassium ions that plain water misses, protecting flavour and burn quality.
When do I switch from Flower Boost to Extreme Boost?
Replace Flower Boost with Extreme Boost at week 6 (day 35-42) for a denser finish and higher brix.
Why Buy from Dr Greenthumbs?
- Price-match promise on the entire Professor’s range.
- Same-day dispatch Australia-wide for orders placed before 2 pm.
- Grow-room support via live chat and in-store consultations.
- Bundle deals that stack savings when you grab the full lineup.
Ready to Grow Like a Pro?
Put theory into practice and watch your yields skyrocket. Shop the Professor’s Nutrients collection now and start feeding plants the science-backed way.
