Nutrafin’s Iron Test (0.0 - 1.0 mg/L) measures iron levels in fresh and saltwater aquariums.

Nutrafin’s Carbonate and General Hardness Test measures Carbonate Hardness (KH) and General Hardness (GH) in fresh and saltwater aquariums.

Nutrafin’s pH High Range Test (7.4 - 8.6) measures pH levels in fresh and saltwater aquariums containing fish that prefer alkaline conditions, such as African Cichlids or marine fish. pH should be monitored regularly as it can directly affect the well-bei

Nutrafin’s pH Low Range Test (6.0 - 7.6) measures pH levels in freshwater aquariums containing most common tropical fish, such as Tetras, Discus, and Angels. pH should be monitored regularly as it can directly affect the well-being of fish.

The Fluval 07 series marks the 7th incarnation in 4 decades of Fluval's top selling canister filter family.