API 5-in-1 Aquarium Test Strips

Measures pH, Nitrite, Nitrate, Carbonate & General Hardness. Just dip & read! ADDITIONAL FEATURES Product Gross Weight: 0.2100 lb Product Net Weight: 0.2100 lb Product Height: 6.50 in Product Length: 3.50 in Product Width: 1.75 in INSTRUCTIONS Use Instructions: It is important for aquarists to provide a healthy aquarium environment by approximating the water conditions of the natural habitats of their fish. This requires routine water testing to make sure that conditions are correct for the fish being kept. API 5 in 1 Aquarium Test Strips are the quick and easy way to test 5 of the most important measures of aquarium water quality: General Hardness (GH), Carbonate Hardness (KH), pH, Nitrite (NO2-) and Nitrate (NO3-). These 5 parameters should be tested weekly, since natural materials in the aquarium, such as fish waste and decaying food, as well as water changes and evaporation can cause these levels to shift over time.Testing Instructions:1. Dip strip direc