Using Tetra Test AlgaeControl 3in1 test strips is a quick and easy method of measuring the 2 most relevant algae growth parameters in ponds and aquariums. These strips test for Phosphate (PO4), and Nitrate (NO3), which are the main food sources for algae and blanketweed, as well as the important Carbonate Hardness (kH) value. Contains 25 strips (x3 tests).
