Hydroponic Nutrients UK | Monkey Nutrients

Feeding Monkey Nutrients in hydro and DWC

Dosing notes

In hydro and DWC the reservoir is the root zone: the nutrient solution is how the plant receives its mineral elements. That gives you the most control and the fastest response, good or bad. Feeding is the same in DWC and hydro, so one routine covers both systems.

Hydro and DWC dosing notes
Area	In hydro and DWC
Reservoir	Change the nutrient solution weekly.
EC and pH	Measure EC first, then adjust pH. EC targets: see the feed chart. Chart pH range: 5.5–6.5.
Mag Cal	With soft or RO water, add 1–2 ml per litre to the tank. None in the flush week.
Base feeds and boosters	The same chart as every other medium: A and B go in separately, in equal amounts, with the dose given per part. PK 9/18 or Resin, not both.
Ultra Zyme	1–2 ml per litre (10–20 ml / 10 L) in every fresh reservoir through the whole life cycle; it supports root-zone health.
Mixing order	Stress first, mixed thoroughly, then the rest one at a time. Never mix concentrates together.

Common problems in hydro and DWC

General hydroponics practice, not Monkey label or chart figures. We give no water-temperature or oxygen targets.

Symptom: Brown, soft or slimy roots, a sour smell, and plants wilting in a full tank.
Likely cause: Root rot, commonly linked to warm, poorly oxygenated or stagnant solution.
What to check: The solution temperature with a thermometer, the air pump and air stones, and when the tank was last changed.
Symptom: Readings drift during the week.
Likely cause: Plants take up water and nutrients at different rates, and top-ups do not reset the mix.
What to check: EC and pH after each top-up, plus the weekly full change.
Symptom: Green growth or slime in the tank.
Likely cause: Light reaching the solution, or residue left over from earlier runs.
What to check: An opaque tank, a closed lid and clean pipes, pumps and air lines.

Hydro and DWC FAQ

How often should I change the reservoir?: Weekly. A full change brings the tank back to a known, freshly mixed solution and is a good moment to inspect the roots.
Is DWC fed differently from other hydro systems?: No. Feeding is the same in DWC and hydro, including the Mag Cal guidance.
Should I adjust pH or EC first?: Measure EC first. Then check pH after mixing and before the solution reaches the roots, keeping it within 5.5–6.5.

The Monkey starter kit

Always add Stress first and mix thoroughly before adding the rest of the nutrients.

Shoots

Grow A+B

Two-part base nutrient. Strong starts. Serious growth.

Use with: Bloom A+B · Root Shoot

1 L5 L10 L25 L

Grow A: Total nitrogen (N) 0.6% · Calcium oxide (CaO) 2.5% — soluble in water · Magnesium oxide (MgO) 0.6% — soluble in water; Grow B: Total nitrogen (N) 0.93 · Phosphorus pentoxide (P2O5) 4.4 (1.9% P) — soluble in water · Potassium oxide (K2O) 6.1 (5.1% K) — soluble in water · Iron (Fe), EDTA-chelated 0.04% · Manganese (Mn), EDTA-chelated 0.01% · Zinc (Zn), EDTA-chelated 0.006% · Boron (B), EDTA-chelated 0.005%View product

Fruits

Bloom A+B

Two-part base nutrient built for the flowering finish.

Use with: Grow A+B · Root Shoot

1 L5 L10 L25 L

Bloom A: Total nitrogen (N) 2.7% · Potassium (K2O) 1.5% — soluble in water · Calcium oxide (CaO) 2.5% — soluble in water · Magnesium oxide (MgO) 0.7% — soluble in water; Bloom B: Total nitrogen (N) 0.93 · Phosphorus pentoxide (P2O5) 4.4 (1.9% P) — soluble in water · Potassium oxide (K2O) 6.1 (5.1% K) — soluble in water · Iron (Fe), EDTA-chelated 0.04% · Manganese (Mn), EDTA-chelated 0.01% · Zinc (Zn), EDTA-chelated 0.006% · Boron (B), EDTA-chelated 0.005%View product

Roots

Root Shoot

Root booster. Great grows start underground.

Use with: Grow A+B · Bloom A+B

20 L

Root Shoot: Total nitrogen (N) 3% — soluble in water · Phosphorus pentoxide (P2O5) 8% — soluble in water · Potassium oxide (K2O) 10% — soluble in water · Arctic sea kelp (natural seaweed extracts) 1% — soluble in water · Humic and fulvic acid 1% — soluble in water · Multivitamins including B1 and B5 1% — soluble in waterView product

Feed chart for this medium Hydroponic Find a Stockist