Keep your tank chemistry under control with the API Phosphate Test Kit (150 Tests) — a fast, easy way to measure phosphate (PO4) in both freshwater and saltwater aquariums. Phosphate can enter your aquarium through tap water, fish waste, and decaying organic matter such as uneaten food. When phosphate levels creep up, freshwater tanks often see unsightly algae/green water blooms, and in saltwater setups excess phosphate can negatively affect sensitive reef conditions.
What it tests
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Measures total phosphate from 0 to 10 ppm (mg/L)
What’s included
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150 tests
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2 test solutions
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Glass test tube
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Easy-to-read instructions + color charts
How to use (quick steps)
Fill the tube with aquarium water, add the required drops from both phosphate solutions, shake as directed, then match the result to the color chart for a clear phosphate reading.
Add this kit to your regular maintenance routine to catch phosphate issues early and keep your aquarium water stable and healthy.
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