API Test Kit - GH/KH General & Carbonate Hardness Rubbers Ropes & Outdoor Favourites Gravel modifiers such as laterite

Gravel modifiers such as laterite are not necessary for the success of this gravel

Give this excellent gecko food a try

Trapped air auto-evacuated every 12 hours to ensure maximum efficiency

Seaweed reduces color fading with continued use

6 and includes approximately 250 tests per kit

API Test Kit - GH/KH General & Carbonate Hardness Rubbers Ropes & Outdoor Favourites Gravel modifiers such as lateriteTests 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 aquarists duplicate the natural habitat of their fish.