API pH Test Kit 28 API pH Test Kit for Freshwater 250 Tests Customer Rating  N/A Add Review Ask Question $8.95 Qty : < > Product Description Reviews (0) (View All) Questions (View All) pH is the measure of acidity of water. A pH reading of 7.0 is neutral. A pH higher than 7.0 is alkaline, and a pH lower than 7.0 is acidic. Maintaining the aquarium at the proper pH ensures optimal water quality. The pH should be tested weekly, since natural materials in the aquarium (such as fish waste and uneaten food) can cause pH shifts. Features: Reads pH from 6.0 to 7.6 For freshwater use only 250 Tests Add Review There are no reviews for this product. Ask Question There are no questions asked for this product. Ok