Dutch Pro CalMag 1L — Calcium & Magnesium Supplement

Dutch Pro CalMag 1L — Essential Calcium & Magnesium Supplement

Calcium and magnesium are two macronutrients of major importance to plant growth and development — deficiencies in either cause stunted growth and serious leaf problems. Since Mg and Ca are needed in rich amounts, especially under certain growing conditions (RO water, soft tap water, high-transpiration environments), Ca/Mg deficiencies are not uncommon. Dutch Pro CalMag provides the supplementation needed.

Why growers choose Dutch Pro CalMag:

• Essential Ca and Mg supplementation — prevents the most common deficiency combinations
• Prevents stunted growth — Ca and Mg are structural nutrients; deficiency stops growth dead
• Essential for RO and soft water — RO strips these minerals; Dutch Pro CalMag re-adds them
• Works in high-transpiration environments — high-heat grow rooms demand more Ca/Mg
• Premium Dutch Pro formulation — respected brand, consistent batch quality
• Pairs with Dutch Pro feeding programme — Grow/Bloom base nutrients integrate cleanly
• Works with any base nutrient — not Dutch Pro-only, universal Ca/Mg supplement

Who it's not for:

Check your tap water EC before ordering. UK tap water is often already hard (EC 0.6-0.8+) — if yours is, you don't need CalMag and over-supply creates different problems. Most useful for RO users, soft-water rural areas, or tap filtered through RO. For similar products at different price points: Canna CalMag, Athena CaMg, Bio-Green X-Cell are alternatives. Not a base nutrient; it's a supplement for specific deficiency cases.

Available to collect from our Stone shop at Unit 24, Emerald Way, ST15 0SR — or ships the same working day from our UK warehouse. Not sure if this is the right fit? Give us a ring on 01785 556355 or email sales@roots2riches.com — we're growers ourselves, happy to help.