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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 Ammonia Test Kit - Freshwater/Saltwater

$28.95 $24.88

API Ammonia Test Kit - Freshwater/Saltwater Taking a few minutes each week to maintain and monitor aquarium conditions is the key to a healthy aquarium.   Tropical fish continually release ammonia into the aquarium...

API Freshwater Mini pH Test Kit

$21.95 $17.88

API Freshwater Mini pH Test Kit The API® pH Test Kit monitors pH to maintain healthy freshwater conditions in your tank. pH control is imperative to prevent the harmful effects of overly alkaline or acidic aquarium water...

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 Glass Test Tube for Test Kit (3pk)

$9.95 $8.88

API Glass Test Tube for Test Kit (3pk) Replacement API Glass Test Tubes for liquid API Test kits or API Master test kits 1 x 85mm x 13mm diameter glass test tube with the a 5mL mark 1 X Plastic Cap          

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...