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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 Copper Test Kit - Freshwater/Saltwater

$28.95 $24.88

API Copper Test Kit - Freshwater/Saltwater 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...

API Freshwater Master Test Kit

$79.95 $69.88

FRESHWATER MASTER TEST KIT Measures the most important aquarium levels quickly and accurately Benefits: Tests pH, High Range pH, Ammonia, Nitrite & Nitrate Scientifically accurate for professional results Follow API...

API Freshwater Mini pH Test Kit

$21.95 $10.97

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 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...

API Phosphate Test Kit

$33.95 $29.88

API Calcium Test Kit  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...