Canna CalMag Agent — Ca/Mg Water Buffer

Canna CalMag Agent — Calcium/Magnesium Buffer for Soft & RO Water

A calcium and magnesium concentrate specifically for buffering soft or reverse-osmosis (RO) water. Canna nutrients are designed to work optimally with water at EC 0.4-0.7; softer water lacks the Ca/Mg required for proper nutrient uptake. CalMag Agent raises water EC to 0.45 and supplies the Ca/Mg your plants need. If your tap water is EC 0.45 or higher, you typically don't need it.

Why growers choose Canna CalMag:

• Buffers soft and RO water — brings mineral content up to proper baseline for Canna nutrients
• Raises water EC to 0.45 — the target baseline Canna nutrients are designed for
• Supplies calcium and magnesium — the two macros most often missing in soft water
• Prevents deficiencies — Ca and Mg lockout symptoms (leaf spotting, tip burn) avoided
• Integrates with Canna feeding schedule — designed to work with Canna Aqua/Coco/Terra programmes
• Works with any nutrient brand — CalMag benefits aren't Canna-only
• Essential for RO-water growers — RO strips everything, you must re-add Ca/Mg

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 adding it can over-supply Ca/Mg. Most useful for RO users, soft-water rural areas, or tap filtered through reverse osmosis. Not a substitute for a complete feeding programme; it's a water buffer, not a nutrient.

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.