Check and adjust the six essential aquarium levels that are necessary for keeping freshwater fish healthy with the API FRESHWATER MASTER TEST KIT. These levels include ammonia, pH, high range pH, nitrite, and nitrate and can be changed quickly and become hazardous if left unchecked. In order to avoid fish illness, reduction of oxygen levels, and a heightened risk of disease, use the API FRESHWATER MASTER TEST KIT to measure and assess. This comes with four glass test tubes, a tray, a test tube rack, and a color chart for easy comparison. With API Aquarium products, it is a breeze to take care of saltwater, freshwater, or reef aquariums. API has been producing technically advanced solutions for over 50 years and their products are designed to work together for optimum results. Use API Aquarium Treatment Supplies to help combat algae, sustain healthy bacteria, and treat fish diseases like ich and fin rot. All you need to do is follow the instructions carefully and you can spend less time cleaning and more time admiring your fish.

- Helps monitor water quality and prevent invisible water problems that can be harmful to fish and cause fish loss
- Accurately monitors 5 most vital water parameters levels in freshwater aquariums: pH, high range pH, ammonia, nitrite, nitrate
- Designed for use in freshwater aquariums only
- Use for weekly monitoring and when water or fish problems appear