Canna Flush

In stock online
Standard Delivery £6.95*
Free Delivery - orders +£65 Free Delivery - orders +£65
Plain Packaging Used Plain Packaging Used
Click and Collect Click and Collect
Product Name Qty Price
Canna Flush - 250ml
Canna Flush - 1L
Canna Flush - 5L
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Canna Flush is a great product to prepare your plants for harvest, it works by breaking down any excess nutrients and salts that have accumulated in the grow medium, leaving crops and fruits flavorsome and free from any chemical tastes, along with helping to improve the overall aroma.

If you’ve accidental over fed your plants as they’re showing signs of nutrition burn on the leaves, do not panic as all is not lost, simply stop using your normal feeding schedule, use Canna Flush for approximately 1 week to rid the medium of access nutrients, then resume your feeding schedule, its also advisable to repeat using Canna Flush as you approach harvest.

Canna Flush can also be used in all mediums, whether soil, coco or hydroponic systems, whatever the substrate, it’s always wise to flush out unwanted chemicals for improved tastes and aromas of your crops.

And finally, this versatile product can also be used to clean soilless inert substrates such as clay pebbles, simply follow the dilution rates, soak for 24 hours then rinse with clean water, it’ll leave the pebbles clean as well nutrient free and ready to be used for the next grow.


  • Rids plants of excess nutrients and salts
  • Better tasting and chemical free fruits and crops
  • Can be used in all grow mediums whether soil, coco or hydroponic systems
  • Cleans inert hydroponic substrates like clay pebbles


  • Start using Canna Flush 1-2 weeks before harvest once per week at the following dilution rates:
  • Soil and Soilless mediums: 2ml per litre of water
  • Hydroponic systems: 4ml per litre of water
  • Cleaning substrates: 4ml per litre, soak subtrates for 24 hours, then rinse thoroughly with clean tap water.
Delivery & Returns
Free Delivery
We are pleased to offer free standard shipping to UK Mainland on all orders over £65.00 *Heavy item surcharges are still applicable.
Next Day Delivery
In a hurry for your order? Order before 1 pm Mon - Thurs for next working day delivery *subject to stock availability T&C's apply.
Different delivery address?
Do your goods need shipping to an alternative address? If so, paying by bank transfer gives you the freedom to have them delivered to anywhere in the UK.
Free Returns
Faulty or damaged item? No problem, contact us on 0800 038 7100 or email customer service and we can arrange a free collection.
Plain Packaging
All parcels, no matter how big or small, are dispatched in plain packaging using black wrap that's secured using 'fragile' tape.
How to Pay
Credit / Debit Cards
We accept all major credit and debit cards. Please note: When paying by credit card we can only ship to the card statement address.
Simply select this option at checkout if you prefer to pay through PayPal. Please note: When paying by PayPal, we can only ship items to the account owners confirmed address.
Bank Transfer
Select the option for Bank Transfer at checkout if you wish to receive your item anywhere within the UK. Please use your order number as payment reference.
Split your purchase into manageable payments. Buy now and pay in 30 days or in three interest-free instalments with Klarna.
Click & Collect
Collect your online orders in as little as under an hour*! Simply pay online, choose your store & collect for free! Available from Manchester & Huddersfield (*subject to stock availability).
Brand Canna
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