Red Sea

RedSea Phosphate Pro (PO4) test kit

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High phosphate levels will slow coral growth by preventing skeletal growth and feed algae growth. Maintaining ultra low levels of phosphate will increase coral growth and help prevent algae outbreaks.

Phosphate Kit includes:

  • 100 tests
  • Easy-to-use, colorimetric comparator
  • Affordable reagent refills


Red Sea produces an algae management line of test kits including nitrate and phosphate test kits. Providing an accurate measurement of these elements allows for proper dosing and control of algae nutrient levels.

Red Sea Phosphate Pro Test Kit Includes:

  • 100 tests
  • Accuracy: ±0.02 ppm
  • Range: 0-5 ppm
  • Test Type: Color comparator
  • Affordable reagent refills


A successful coral reef aquarium depends on how well you maintain the water parameters which are the key to a stable coral environment. Using Red Sea test kits will allow you to accurately measure these levels and guide you on your path to reefing success.


Manual Owners Manual

More Information
UPC 730773214259
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Product Questions

just purchased this product, whats the difference between the hi resolution and regular test, does it matter which one i use,also my reading is 0.16 ppm, is that ok ? I just realized that the goal is not to achieve zero phosphate, I read you do still need some in tank for corals 0.02 ppm is what I read is this the case.
Question by: val sammut on Jan 26, 2017, 10:42 AM
Great question! The high range gives the values for P-PO4 which is the Phosphorus content of Phosphate. We typically focus on the low range phosphate levels and you are right, the goal is to be as near zero as possible. With the 0.16ppm phosphates in your tank, you may begin to experience nuisance algae in your tank. :-)
Answer by: Randy on Jan 29, 2017, 2:25 PM