The API GH & KH Test Kit provides precise measurement of general hardness (GH) and carbonate hardness (KH), essential for maintaining balanced conditions in freshwater aquariums and tap water. Proper GH and KH levels are crucial to preventing sudden pH changes that can stress aquatic life, thus fostering a stable environment. This test kit is specifically designed for aquarists aiming to create natural conditions that mimic the natural habitats of their aquatic pets.

• Dual Hardness Testing: Accurately measures both general and carbonate hardness in water.
• Stability Assurance: Helps prevent pH fluctuations, ensuring a healthier environment for aquatic species.
• Ease of Use: User-friendly testing process that provides quick and reliable results.
• Essential for Freshwater Systems: Optimises water hardness to match the specific needs of various fish species.

With the API GH & KH Test Kit, you can confidently maintain the right water conditions, promoting the health and well-being of your fish. By keeping GH and KH levels in check, you're actively preventing undesirable pH shifts that could affect your aquatic environment adversely.

• Suitable for: Freshwater Aquariums & Tap Water
• Application Type: Water Hardness Testing
• Test Range: General Hardness (GH), Carbonate Hardness (KH)
• Use: Regular Aquarium Maintenance

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.