British Minerals Calmag (1lt, 5lt, 10lt, 25lt)

British Minerals CalMag is a high-quality calcium and magnesium supplement formulated to prevent and correct deficiencies in soft or reverse osmosis (RO) water. These two essential secondary nutrients play a vital role in overall plant health — supporting strong cell walls, healthy growth, and nutrient uptake.

Perfect for use throughout the grow and bloom stages, this supplement improves resistance to stress and ensures your plants have everything they need to flourish.

Key Features:

• Boosts calcium and magnesium levels

• Prevents common deficiency symptoms like leaf curl and yellowing

• Especially useful with soft or filtered water

• Supports stronger stems and healthy nutrient uptake

• Compatible with hydro, soil, and coco setups

Ideal For:

Hydroponics, coco coir, RO water users, soft water areas, indoor and greenhouse growing.