Worried about your pond water quality? The easiest way to find out what's going wrong with your fish pond is to do a simple water test. Available from 123 Aquatics, you can buy pond test kits for testing pH, nitrate, nitrite and other factors effecting water quality and fish health. We supply a wide range of liquid and digital test kits from quality manufacturers such as API, Tetra, Blagdon and Waterlife.