Water Test Strips – 5 in 1

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API 5-in-1 Test Strips make it quick and easy to check your freshwater or saltwater aquarium, measuring nitrite, nitrate, carbonate and general hardness, and pH in a single dip.Goo d water quality is essential - poor conditions can cause stress, illness and even death in fish. Simply dip a strip into your aquarium and compare it against the colour-coded chart to see whether your water is safe or needs adjusting. Show more