Canna pH-

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Standard Delivery £6.95*
Free Delivery - orders +£65 Free Delivery - orders +£65
Plain Packaging Used Plain Packaging Used
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Product Name Qty Price
Canna pH Down Organic - 1L
Canna pH Down Bloom - 1L
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Canna Bloom pH Down 1 Litre (59% Phosphoric acid) is a mineral regulator for regulating the ph value of liquids. It contains phosphoric acid, which reduces the pH value of the nutrient solutions in flowering plants. This enables the plants to absorb all nutrients, which are much needed during this period.

The acid content in liquids is a significant component for the development of your plants. If it is too acidic or alkaline the plant can not absorb certain nutrients. It is therefore important to keep a close eye on the pH value and to recognise your plant's requirements.


Add a small amount of roughly 1 to 5 millilitres of Canna pH Down Bloom to your fertiliser solution. Test the pH value. If required, repeat the procedure until you attain the desired acidity level. Canna recommends a pH value of roughly 6.2 for the flowering period.


Canna Organic pH Down 1 Litre (50% Citric Acid) is used for reducing the pH of your nutrient solution. Citric Acid is a completely natural acid and works really well for organic growing. Beneficial bacteria and moulds thrive when using Citric Acid as your pH adjustment fluid. Highly recommended for the all-natural grow.

  • reduces the pH of your nutrient solution
  • Highly Concentrated – 50% Citric Acid
  • All-natural and allows beneficial microbes to thrive
  • Ideal for the vegetative and flowering stages
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.
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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.
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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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