API Phosphate PO4 Freshwater & Saltwater Aquarium Test Kit, 150 count

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Prevent excess phosphate in your fresh or saltwater tank with API Phosphate PO4 Fresh & Salt Water Aquarium Test Kit. Phosphate can come from tap water, waste, uneaten food or dead algae. In freshwater tanks, high phosphate levels can cause algae and green water blooms; in saltwater tanks, it can stunt the growth of hard corals. This easy-to-use test kit measures phosphate levels from 0 to 10. Simply fill a test tube with your tank water, add a few drops of both test samples and shake. Then compare your results to the color card and follow instructions to lower phosphate if necessary. Frequent testing is recommended to help maintain healthy aquarium conditions.

Key Benefits
  • Helps maintain a healthy aquarium by allowing you to measure and control phosphate levels.
  • Frequent testing is recommended to ensure your tank is healthy for your aquarium life.
  • Prevents potentially harmful algae and green water blooms in fresh water.
  • Promotes the growth of hard corals in salt water.
  • Kit includes two bottles of liquid test reagent, two-color cards, glass test tube and information on how to correct water condition.
What's Included

(2) bottles of liquid test reagent, (2) laminated, computer calibrated color cards, glass test tube with snap-tight cap, step by step instructions and information on how to correct unsafe conditions.

Help keep your aquarium in tip-top shape with API's Phos-Zorb filtration pouch.

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  • Aquarium Type

    Freshwater, Saltwater


For what type of tank is API PHOSPHATE TEST KIT most appropriate? Why should I test for phosphate?

Phosphate enters your aquarium through fish and invertebrate waste, and excess phosphate can cause problematic conditions in your tank. Use the API PHOSPHATE TEST KIT to test for high phosphate levels weekly. May be used for both marine (saltwater) and freshwater aquariums.

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  • fish supplies

    By on

    The product is great. Luckily we are into fish tanks because the glass tube came broke but no biggie.

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  • Great test kit!

    By on Top 25 Contributor

    A necessity for testing my pond! Delighted that Chewy carries this!

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  • Phosphate test kit

    By on

    It is ez to use, comes with instructions on how to use and color chart that way you can see your phosphate leave.

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