Calcium Magnesium Supplement

Terra Aquatica's Calcium Magnesium Supplement (formerly GHE Calcium Magnesium) delivers concentrated, highly bioavailable calcium and magnesium in a clean, fully soluble form that won't clog drippers or irrigation emitters — a key advantage over bulkier organic Cal-Mg sources.

Calcium and magnesium are two of the most commonly deficient secondary nutrients in cannabis cultivation, particularly in coco coir (which sequesters calcium ions) and in systems using soft or reverse osmosis water. Terra Aquatica's formulation provides both elements in a stable, chelated form that plants absorb efficiently across a wide pH range.

Use it throughout the grow cycle: start by adding 1.0–1.5 ml/L when hydrating or buffering coco, then continue through veg and bloom as a preventative measure. It prevents classic symptoms like tip burn (calcium), interveinal yellowing (magnesium), and reduced photosynthesis. Compatible with all grow media — soil, coco, hydro, aeroponic — and pairs cleanly with Terra Aquatica's TriPart, DualPart, and DryPart base nutrient systems.