Water & testing

Freshwater and reef test kits, conditioners, RO water, salt mixes and refractometers.

Test kitsFreshwater and reef

Water prepConditioners, RO and salt

Water & testing

Test kits

Buying guideThe Aquarium Nitrogen Cycle

Cycling

How to cycle a new aquarium: ammonia to nitrite to nitrate, fishless cycling, the test kits you need, how long it takes, and how to know it is finished.

ComparisonLiquid vs Strip vs Digital Aquarium Test Kits

Test Kits

Compare liquid reagents, test strips and digital aquarium checkers by parameters measured, reading method, setup, repeatability and ongoing supplies.