API® Phosphate Test Kit — 150 Tests Poly-Flo Change colors

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API® Phosphate Test Kit — 150 Tests Poly-Flo Change colorsAPI Phosphate Test Kits quickly and accurately measure phosphate levels from 0 ppm to 10 ppm. Phosphates can enter the aquarium through tap water, fish waste and decaying organics such as uneaten food and dead algae. Excess phosphate contributes to unsightly algae and green water blooms in freshwater and hard corals in saltwater. Includes 2 liquid test bottles, glass test tube, color chart, and instructions For use in fresh and salt water Makes 150