Terra Aquatica DualPart Grow Hard Water Vegetative Nutrient

£13.49 GBP

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Size 1L 5L

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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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Description

The vegetative half of the two-part feed, formulated for hard water

DualPart Grow Hard Water is the vegetative half of Terra Aquatica's two-part base feed, in the version for hard tap water. It carries less calcium and magnesium than the soft water formula on the assumption that your supply already brings plenty, which keeps total EC under control.

Key Benefits

Matched to hard tap water - avoids the calcium overload that causes lock-out when a soft water feed meets a hard supply
Nitrogen weighted for vegetative growth - strong stems and short internodes
Two-part simplicity - a single ratio to manage through the cycle
Micronutrients included - no separate trace element product
Pairs with DualPart Bloom - shift the ratio as flowering begins

Hard water, high EC and nutrients that stop working

Hard water already carries a large calcium and bicarbonate load. Add a feed that assumes soft water and total EC climbs while nutrient uptake falls, with iron and manganese the first to lock out. The hard water formula leaves room for what your tap already provides.

How to Use

Early vegetative: 2 ml per litre with 1 ml per litre DualPart Bloom
Late vegetative: 3 to 4 ml per litre with 1 to 2 ml per litre Bloom
Transition: reduce Grow as Bloom rises through the first fortnight of flower
Mixing: Grow into plain water first, stir, then Bloom
Target pH: 5.5 to 6.2 in hydroponics, 6.0 to 6.5 in soil

Technical Specifications

Programme: DualPart two-part base feed
Water type: Hard tap water
Role: Vegetative half of the pair
Typical dose: 2 to 4 ml per litre
Partner product: DualPart Bloom
Media: Hydroponics, clay pebbles, rockwool, soil

Feed Chart

Terra Aquatica DualPart Grow, hard water · hydroponics, coco and soil

Stage	Per 1 L	Per 10 L
Hydro and coco — 1st roots	0.5 ml	5 ml
Hydro and coco — 1st true leaves	1.5 ml	15 ml
Hydro and coco — Growing	3 ml	30 ml
Hydro and coco — Preflowering	3 ml	30 ml
Hydro and coco — Flowering	1.5 ml	15 ml
Soil — 1st roots	0.3 ml	3 ml
Soil — 1st true leaves	1 ml	10 ml
Soil — Growing	2.5 ml	25 ml
Soil — Preflowering	2 ml	20 ml
Soil — Flowering	1 ml	10 ml

Note — This is the HARD-WATER version; there is a separate soft-water formulation. Use it alongside DualPart Bloom, adding Grow to plain water first, stirring, then Bloom. Target pH 5.5 to 6.2 in hydroponics and 6.0 to 6.5 in soil. Check pH and EC after mixing.

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.