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Test Kits

Testing your aquarium water will help ensure it's clean, clear and healthy. Use API® test kits and test strips regularly to keep healthy conditions for your fish.

We here at Aquarium Spare Parts endeavour to keep all genuine Aqua One spare parts in stock. However if there is a part you are looking for but have not seen on our website please contact us at and we will do our best to source the part for you.

API GH/KH Hardness Test Kit

$24.95 $18.88

API GH/KH Hardness Test Kit  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...

API pH Test Strips (25pk)

$29.95 $27.88

API Deluxe pH Test & Adjuster Kit  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. Contains 25 test...