Description
DutchPro Hydro/Coco Grow for Hard Water is a two-part professional vegetative nutrient from DutchPro, formulated for hydroponic and coco coir growing systems using hard water sources across the UK. We have been recommending DutchPro’s hard water nutrient range to UK growers since 2017 as a precisely formulated, commercially tested nutrient system developed to the exacting standards of the Dutch professional greenhouse industry.
Hard Water Vegetative Nutrition for Hydro and Coco
Vegetative growth in hydroponic and coco systems with hard tap water requires a base nutrient that accounts for the elevated calcium and magnesium content of hard water from the outset. DutchPro Hydro/Coco Grow for Hard Water formulates the grow-stage N-P-K and mineral profile around the typical hard water calcium and magnesium contribution, delivering a correctly balanced vegetative solution without the calcium excess that affects growers using unmatched products in hard water areas.
The two-part A&B format keeps incompatible mineral compounds separated until diluted — calcium in one part, sulphate and phosphate in the other — preventing the crystalline precipitation that would occur in a single-bottle concentrate. Mix equal parts at the recommended dose, adjust pH to 5.8–6.2 for hydro and coco, and your vegetative nutrient solution is correctly prepared and ready to apply.
Building the Foundation for a High-Yield Flowering Cycle
The quality of vegetative growth directly determines the yield ceiling of the flowering cycle that follows. Strong, healthy vegetative development — driven by correctly balanced nutrition throughout the growth phase — produces more flowering sites, stronger stems, and better overall plant architecture that supports higher flower loads at harvest. DutchPro Hydro/Coco Grow for Hard Water is the nutritional foundation for this vegetative quality.
Transition to DutchPro Hydro/Coco Bloom for Hard Water when switching to 12/12 flowering photoperiod. Pair with DutchPro Take Root during propagation and early growth, and DutchPro Multi Total for micronutrient and organic supplementation throughout the vegetative phase. Compatible with the full DutchPro additive range.







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