API Test Kits

The quick and accurate way to test for pH, Nitrite, Nitrate, General Hardness and Carbonate Hardness. Desiccant-lined tube, with snap-tight cap, provides maximum moisture protection for accurate results. Highly precise color charts ...

Our price: £8.99

Ammonia, constantly released into the aquarium, is the number one killer of tropical fish. Fast, easy and accurate, this test kit measures ammonia levels from 0 to 7 ppm.

Our price: £8.74

Calcium is one of the most important elements in a reef aquarium. Reef invertebrates such as corals, crustaceans, mollusks and even some types of encrusting algae need calcium to grow and remain healthy. Over time, calcium levels drop as invertebr...

Our price: £8.74

Copper, a common treatment for many parasitic infections, must be monitored in an aquarium or a pond. The copper level can drop too low for the treatment to be effective, or can increase to a point that is detrimental to fish health. Copper may ev...

Our price: £8.74

This kit tests tap water and aquarium water for five different parameters that affect the health of freshwater fish: pH, High Range pH, Ammonia, Nitrite and Nitrate. Highly accuate and economical. Unique, transparent dome allows clear view of co...

Our price: £26.77

Tests tap water and freshwater aquariums for general hardness (GH) and carbonate hardness (KH). Helps detect stress on fish caused by rapid pH shifts, which result from low KH levels and helps aquarists duplicate the natural habitat of their fish....

Our price: £7.64

Tests tap water & fresh or saltwater aquariums for carbonate hardness (KH). Can be used to determine the proper dose of pH buffers.

Our price: £4.84

Measures nitrate levels in both fresh & saltwater aquariums. Tests nitrate levels from 0 to 160 ppm. 90 tests per kit.

Our price: £8.74

Toxic nitrite is produced by nitrifying bacteria in the biological filter as it breaks down ammonia. This kit tests for harmful nitrite and measures levels from 0 to 5.0 ppm.

Our price: £8.44

Use to measure pH changes in marine aquariums, aquariums with African cichlids, and very alkaline tap water. Reads the pH of water within the high range of 7.4 to 8.8. 160 tests per kit.

Our price: £5.36

A complete kit to measure and adjust pH. Tests pH levels from 6.0 to 7.6 and includes bottles of pH Up and pH Down to modify aquarium water pH to desired levels.

Our price: £7.91

Phosphate can enter your aquarium through tap water, fish waste, and decaying organics such as uneaten food and dead algae. Excess phosphate contributes to unsightly algae blooms. This kit tests phosphate levels from 0 to 10 ppm in fresh and saltw...

Our price: £8.74