API FRESHWATER MASTER TEST KIT DENNERLE with a maximum fluctuation of

with a maximum fluctuation of 0

leaving your tank clean

It mixes well into water and does not float to the surface minimizing food waste

The cartridge works with a mini regulator (not included) with or without electrical switch as well as hand-on bracket or a cartridge stand (not included)

API FRESHWATER MASTER TEST KIT DENNERLE with a maximum fluctuation ofThe 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 reusable FRESHWATER MASTER TEST KIT comes with 4 glass test tubes with snap tight caps and a convenient holding tub for easy storage. Also includes a step by step instruction booklet with a color chart that provides