Growth Technology

The pH bench standard.

The pH kit most UK growers calibrate with, the Ionic feeds, and the Focus range for houseplants and citrus.

Nothing matches all of those filters.

Base feeds

The staple. Everything else goes on top of this.

Hydro

GreenHaze Bloom A&B – Two Part Hydroponic Flowering Feed

£35.95

Soil

Ionic Soil Grow – One Part Vegetative Nutrient for Soil

£9.92

Soil

Ionic Soil Bloom – One Part Flowering Nutrient for Soil

£9.92

Hydro

Ionic Hydro Grow – One Part Soft Water Hydroponic Nutrient

£12.49

Coco

Ionic Coco Bloom – One Part Flowering Nutrient for Coir

£12.49

Coco

Ionic Coco Grow – One Part Vegetative Nutrient for Coir

£12.49

Hydro

Ionic Hydro Bloom – One Part Soft Water Hydroponic Nutrient

£11.49

Flowering boosters

Used through the second half of the cycle.

SoilCocoHydro

Ionic PK 14/15 Bloom Boost – Phosphorus Potassium Booster

£14.49

Cal-Mag and pH control

Correcting the water before the feed goes in.

Growth Technology PH Down 81% – Phosphoric Acid pH Reducer

£4.49

Growth Technology pH Up – Potassium Hydroxide pH Adjuster

£3.49

SoilCocoHydro

Growth Technology Liquid Silicon – Silica Plant Supplement

£3.49

Growth Technology pH Buffer 4 – Calibration Solution

£2.95

Growth Technology pH Down 30% – Phosphoric Acid Adjuster

£10.45

Growth Technology pH Buffer 7 – Calibration Solution

£2.95

Enzymes and additives

Everything that is not a base feed or a booster.

SoilCocoHydro

Ionic Cal-Mag Pro – Calcium & Magnesium Supplement

£19.49

Growth Technology Liquid Oxygen – 11.9% Hydrogen Peroxide

£2.49

Propagation and starters

Mild feeds for seedlings and cuttings.

SoilCocoHydro

Clonex Rooting Gel – IBA Hormone for Cuttings

£7.95

SoilCocoHydro

Clonex Mist – Propagation Foliar Spray for Cuttings

£7.49

Organic

Growth Technology Formulex – Organic Kelp Seedling Feed

£5.49

Accessories and spares

Replacements and fittings, kept out of the way of the main range.

Growth Technology — simple British one-bottle feeds

Growth Technology keeps things straightforward with Ionic, a one-bottle-per-stage feed that skips the two-part mixing most other brands require — useful if you want fewer variables to get wrong on a first grow. Formulex is their dedicated propagation and first-feed formula, gentle enough for seedlings and fresh cuttings from day one, and Clonex — both the Rooting Gel and the Mist — is the industry-standard cutting aid used across brands, not just with Growth Technology's own feeds.

Liquid Silicon strengthens cell walls and is worth running from early veg through to late flower regardless of which base feed you're on, and Buffer 4 and Buffer 7 calibration solutions keep a digital pH pen accurate — recalibrate every two to four weeks for reliable readings. Liquid Oxygen boosts dissolved oxygen in reservoirs, useful for hydro and DWC setups where root zones can otherwise run low.

Clonex works as a stand-alone purchase even if you're running a completely different brand's feeding schedule — it's the one product here most growers buy regardless of what else is in their cupboard, and it's rare to find a UK grow shop that doesn't stock it somewhere on the shelf.

See propagation nutrients for the wider first-feed range. Free delivery over £60.