Tetratest Strips 6 in 1 Aquarium Line - Aquarium Store
Aquarium Test Strips 6 in 1 is the optimum water test kit, one strip performs six important tests. In just one minute you will know your water's NO2, NO3, GH, KH, PH, Cl2 levels. The whole set contains one barrel and a refill pack, 100 strips in total.
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