API® GH & KH Test Kit - General and Carbonate Hardness Test Kit Savio Replacement Filter Media Tubing: 4 rolls of 25'

Tubing: 4 rolls of 25' black vinyl

Triton Check Valve

Benefits of subsurface aeration:

12 ft3/min @ 2

API® GH & KH Test Kit - General and Carbonate Hardness Test Kit Savio Replacement Filter Media Tubing: 4 rolls of 25'Keep your fish healthy and thriving by testing your aquarium water's GH levels regularly with this easy to use API GH & KH TEST KIT for freshwater aquariums. Testing water parameters weekly helps prevent invisible water problems that can be harmful to fish. Water hardness is a measure of the dissolved mineral content of water. Contains one (1) API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, including 2 bottles of testing solution and 2 test