Colombo pH- is a liquid treatment designed to safely lower and stabilise pH levels in pond water. Maintaining the correct pH is important for fish health, with an ideal range between 7 and 8. This formula works quickly while supporting the pond’s biological balance, making it suitable for routine water management.

Key Features:

• Effectively reduces high pH levels in pond water
• Fast-acting formula with stable results
• Helps maintain a healthy environment for fish and plants
• Safe for koi, ornamental fish and aquatic life when used correctly
• Simple daily dosing for controlled adjustments
• 2.5L bottle treats up to 25,000 litres

Colombo pH- allows for gradual pH correction, helping to avoid sudden changes that can stress fish. Regular testing and careful dosing help maintain consistent water conditions and support overall pond stability.

Dosage:

• 50 ml per 1,000 litres of pond water daily
• Do not reduce pH by more than 1 unit per day
• Do not exceed 50 ml per 1,000 litres
• Repeat dose the following day if required
• Ensure KH is at least 6°DH before use

Aquacadabra acts as credit broker/intermediary and not as a lender.

Klarna's credit products are provided by Klarna Bank AB, which is authorised and regulated by the Swedish Financial Services Authority, with limited supervision by the Financial Conduct Authority. More information can be found here.

Newpay finance options are provided through Deko’s platform by NewDay. P.D. Aquatics Ltd, t/a Aquacadabra is an Introducer Appointed Representative of Pay4Later Ltd, t/a Deko, which is authorised and regulated by the Financial Conduct Authority (ref no 728646) and is a credit broker, not a lender. NewDay Ltd is authorised and regulated by the Financial Conduct Authority (ref no 690292) and is authorised by the Financial Conduct Authority under the Payment Services Regulations 2017 for the provision of payment services (ref no 555318). More information can be found by clicking the newpay option above, or in the Newpay FAQs.

We really want you to be happy with the product that you've received. If however, when the goods arrive they're not what you want, then no problem - we have a 60 day no quibble return guarantee. Just let us know that you're going to return the item(s) by contacting us(stating your Order Number) and complete the returns packing slip that will have been included with your delivery. This will help us to quickly identify the item that you have returned (unopened and unused) - and we'll put a refund through for you.