API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia w/ GH/KH Chemical Media the calcium level drops as

the calcium level drops as it is used by invertebrates

Collects and retains all particles larger than 5µm

Additional heat sources can be used in conjunction with the Exo Terra Heat Mat

Fluval foam filter block with handle

API Master Freshwater Aquarium Test Kit pH Nitrite Nitrate Ammonia w/ GH/KH Chemical Media the calcium level drops asDescription The API FRESHWATER MASTER TEST KIT measures the 4 most important levels in freshwater aquariums quickly and accurately, including pH, high range pH, ammonia, nitrite, and nitrate. With scientific accuracy for professional results, the FRESHWATER MASTER TEST KIT comes with 4 test tubes and a convenient holding tub for easy storage. The kit also includes a step by step instruction booklet with a color chart that provides information on how