CANNA Flush | Nutrient Flushing Agent 250ml, 1L & 5L

CANNA Flush – Nutrient Salt Flushing Agent

£7.95 £11.40

CANNA Flush – The Reset Button for Your Root Zone

Over-feeding is the most common way good growers hurt their plants. A little extra here, a stronger dose there, and before long the compost or coco is loaded with leftover nutrient salts: crispy brown leaf tips, curling leaves, a plant that looks hungry despite being overfed. Plain water rinses some of it out, slowly. CANNA Flush does it properly. It pulls the excess salts out of the growing medium without killing the beneficial bacteria and fungi your roots depend on, which is what can happen when you flush with reverse-osmosis or demineralised water.

When to Use It

After over-feeding: brown, burnt leaf tips, or a run-off EC far higher than what you're feeding
Before harvest: in the final week or so, so the plant uses up its stored minerals for a cleaner-tasting crop
When reusing compost or coco: to clear old salts before the next crop

Key Benefits

Clears excess nutrient salts from the substrate and plant
Leaves beneficial microbes alive
Works on soil, coco and hydro
Fully biodegradable

How to Use

4ml per litre of water (40ml per 10 litres). Water through until plenty runs out of the drainage holes. For a pre-harvest flush, feed with Flush and plain water only for the final week or so.

🌿 Rose's Pro-Tip: a flush only works if water actually flows through. Water slowly until a good 20–30% runs out of the bottom, then let it drain fully before watering again.