Water Tests



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JBL Magnesium Mg Test Refill View larger

JBL Magnesium Mg Test Refill


New product

Liquid Drop Water Test Mg Refill

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£ 7.99

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Pro Shrimp's comment: Liquid Test Kits are more accurate than the common test strips and enable you to do more tests per package.

This is the Magnesium Refill for salt water tanks.

  • Suggested value in saltwater aquariums:
  • Ca: 400-440 mg/l, Mg: 1200-1400 mg/l
  • First the magnesium level is determined, including calcium. Then the calcium is measured and subtracted from the total value.
  • The set includes both tests (Ca-Test + Mg-Test).
  • Insufficient levels of and magnesium affect the growth of corals and stunt the growth of the attractive red calciferous algae.

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