Hesi Hydro Grow Vegetative Nutrient for Hydroponics
Hesi Hydro Grow Vegetative Nutrient for Hydroponics
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Order by 3pm Mon–Fri — we aim to post same day · FREE Express Delivery over £60 · 1–2 working days · Free Wembley pickup
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A vegetative base for inert media, in soft and hard water versions
Hesi Hydro Grow is the vegetative base for hydroponics, clay pebbles and rockwool. It comes in soft water and hard water formulations - the soft water version carries its own calcium and magnesium, the hard water version leaves room for what your supply already provides.
Key Benefits
- Two formulations - match the feed to your water instead of correcting it afterwards
- Vitamins and amino acids included - Hesi build these into the base rather than selling them separately
- Stable in a recirculating tank - holds pH better than most single-part feeds
- Low salt index - less build-up across a long recirculating run
- Pairs with Hydro Bloom - the same programme through flower
Using the wrong formulation for your water
A soft water feed on hard tap water pushes total calcium too high and locks out iron and manganese. A hard water feed on RO leaves the plant short of calcium entirely. Both look like deficiencies and both get treated by feeding harder, which makes them worse. ⛑ Test your water first - under about 100 ppm is soft.
How to Use
- Which version: soft water under roughly 100 ppm or on RO, hard water above it
- Early vegetative: 3 ml per litre
- Late vegetative: 5 ml per litre
- Transition: reduce as Hydro Bloom comes in
- Target pH: 5.5 to 6.2
Technical Specifications
- Programme: Hesi hydroponic
- Role: Vegetative base
- Formulations: Soft water and hard water
- Typical dose: 3 to 5 ml per litre
- Media: Hydroponics, clay pebbles, rockwool
- Target pH: 5.5 to 6.2
| Stage | Per 1 L | Per 10 L |
|---|---|---|
| Early vegetative | 3 ml | 30 ml |
| Late vegetative | 5 ml | 50 ml |

FREE Express Delivery on orders over £60. We aim to post same day for next-working-day arrival — order by 3pm Mon–Fri. Delivery is 1–2 working days. A few harder-to-stock or large, bulky items can take a little longer — we'll tell you if that applies to your order. Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.