Red Sea Phosphate Pro Comparator Test Kit

8 reviews

Red Sea Phosphate Pro Comparator Test Kit is best used with a nitrate test kit, allowing you to compare their levels to see if they are too high, indicating that algae is soon to start forming, allowing you to take swift action to prevent it.


  • Phosphate Pro Comparator Test Kit
    code: R21425 In stock Only 3 left in stock
  • Phosphate Pro - Reagent Refill Kit
    code: R21426 In stock Only 2 left in stock

Product Information

Red Sea's Phosphate Pro test kit is an advanced colorimetric test with comparator, measuring the level of Phosphate in your reef aquarium to 0.014ppm P-PO4.

This test kit, used in conjunction with Nitrate Pro Test Kit, enables accurate dosing or Red Sea's X Nitrate & Phosphate Remover (NO3:PO4-X)

Phosphate is an important fertilizer, very low levels are good to stimulate healthy plant growth. Unfortunately too much phosphate can lead to algae growth, so it's important to keep an eye on the levels in your aquarium.

What's in the box?

  • A durable plastic housing,
  • A durable plastic stand for test vial,
  • Glass Test Vial's,
  • A 10ml syringe,
  • High resolution colorimetric comparator test (colour chart),
  • High resolution measurement of Phosphate testing liquids,
  • Contains up to 100 tests for Phosphate testing,
  • Full in-depth instruction manual.

Swell UK's Recommendations: Especially in a reef aquarium, the Phosphate level should be checked every week. The concentration should be as low as possible with 0.3 ppm as an absolute maximum for the reef aquarium. Higher concentrations than this value are not in any way toxic for marine or freshwater fish - the danger lies only in the fact that the water gets over fertilized, which results in algae growth and harm to invertebrates. If levels do exceed over 0.3 ppm then it is recommended to do a water change and treat with Red Sea's NO3:PO4-X.

For Further Information Please Refer To The Red Sea Brochure Below.

RedSea Reef Care Brochure

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