NT Labs Buffer KH Up helps maintain stable pond conditions by increasing carbonate hardness (KH), alkalinity reserve, and buffer capacity. This prevents dangerous pH crashes and supports a healthy environment for fish. Easy to apply, it is available in 1.5 kg bags, 5 kg buckets, and 20 kg buckets to suit ponds of all sizes.

Key Features:

• Stabilises pond pH and prevents sudden pH crashes
• Increases carbonate hardness (KH) and alkalinity reserve
• Supports healthy fish metabolism and water balance
• Simple to dose and apply
• 1.5 kg treats up to 6,800 L (1,500 gallons)
• Available in 1.5 kg, 5 kg, and 20 kg pack sizes

Regular KH testing is recommended using the Pondlab Hardness Test Kit. Keeping KH levels above 6° carbonate hardness protects fish from stress and ensures stable pond conditions day and night.

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.