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The API 5 in 1 Aquarium Test Strip provides a fast and effective way to test your aquarium water and can be used with both fresh and saltwater aquariums.
It includes five easily understandable strips, with tests that include pH (acidity levels) , NO2 (nitrite levels), NO3 (nitrate levels), KH (carbonate hardness) and GH (general hardness) levels, as well as information on how to correct unsafe water conditions.
Each pack contains 25 test strips and can be dipped directly into the aquarium, with no seperate vial required.