Pro-REEF is suggested for aquarists wanting to keep a lower alkalinity in their tanks or ones using calcium or Kalk Wasser reactors. Pro-REEF has a lower alkalinity: 6.5 - 7.5 dKH, calcium : 430-450 ppm and magnesium:1300-1350 ppm. Made with all pharmaceutical grade raw materials, it has zero nitrates, phosphates and silicates. It always dissolves cleanly and crystal clear with no residue and is produced in our lab under the strictest batch controls.
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