CalMag Agent Calcium & Magnesium Supplement – CANNA
CalMag Agent Calcium & Magnesium Supplement – CANNA
CalMag Agent – Turns Soft Water Into Proper Plant Water
We tend to think of soft water as the "good" kind: kinder to kettles, gentler on skin. Plants see it differently. Rainwater, filtered water and naturally soft tap water contain almost no calcium or magnesium, two minerals plants lean on constantly. Calcium builds strong cell walls; magnesium sits at the heart of every chlorophyll molecule. Water your plants with soft water for long enough and they start to show it: pale or yellowing leaves, weak growth, and on tomatoes and peppers the sunken black patches of blossom end rot.
CalMag Agent was created by CANNA in response to popular demand from growers using soft water. A small dose raises the calcium and magnesium content of your water, giving plants the mineral foundation they need to grow strong and healthy.
Who Needs It
Anyone watering with rainwater from a water butt, filtered or reverse-osmosis water, or naturally soft tap water; coco growers, since coco holds onto calcium and magnesium; and tomato, chilli and pepper growers looking to prevent blossom end rot.
Key Benefits
- Fewer calcium and magnesium deficiencies
- Better nutrient uptake
- Stronger plants and better-quality flowers and fruit
- Highly concentrated, so a little goes a long way
- Means less base nutrient is needed overall
How to Use
Add to your water before any other nutrients, following the dosage on the label. It raises the EC (mineral content) of soft water to a better starting point for feeding.
🌿 Rose's Pro-Tip: if you collect rainwater for your plants, this is the single cheapest upgrade you can make. Rain is wonderful for plants in every way except one, and CalMag Agent fixes that one.
Sizes
1 Litre, 5 Litres and 10 Litres. Add a measuring syringe for accurate dosing.
Black Flag Horticulture Ltd, Coventry – proud UK CANNA stockists.