Canna Flush


Size: 5 Litre
Sale price£45.99

Canna Flush

Canna is one of the best-known and trusted names in the hydroponic plant-feed business. Canna Flush removes excess nutrients from your plants and grow-medium. Great for use before harvest and also in the case of over-fertilisation.

How Canna Flush Works

Canna Flush contains ingredients which draw out nutrients out of plant tissue and grow-mediums and then holds on to them so that they can then be washed out. Canna Flush works great for saving an accidentally over-fertilised plant and also to clean nutrient out of your plants just before harvest to give your crops a much cleaner taste.



Canna Flush (choose between 250ml, 1 litre and 5 litre bottles)


  • Canna – Well-known and long-standing brand - trusted by thousands of growers world-wide
  • Removes excess nutrients from plants and grow-mediums.
  • Great for use just before harvest
  • Invaluable if you’ve accidentally over-fertilised your plants
  • Does not kill beneficial micro-organisms
  • Gives you a cleaner tasting crop

How To Use

How to Use Canna Flush

In the case of over-fertilisation, use Canna Flush as soon as possible. To flush plants prior to harvest, begin the flush one to two weeks before harvest.

For soil and highly absorbent mediums: add Canna Flush to water at a rate of 2ml/litre and mix well. Water your plants with the solution until some run-off is achieved. Leave for 24 hours and then feed plain water until there is at least 10%-20% run-off. Resume normal watering afterwards achieving some run-off each time.

For hydroponics and drier mediums: for the last feed of the day, add Canna Flush to fresh, plain reservoir water at a rate of 4ml/litre and run the last watering. For drain-to-waste systems, achieve 10%-20% run-off. Refill the reservoir with fresh water and resume normal watering schedule the next day.

Canna Flush recommended dosage for soil: 2ml/Litre.

Canna Flush recommended dosage for hydroponics: 4ml/Litre

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