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Coral Tank Parameters

One of the most frequent questions we get are what levels should I keep to grow corals in my tank.  Here is a chart showing suggested levels depending on the type of corals your keeping in your tank.

 

Soft Corals Mixed Reef SPS Dominant Frag Tank
Salinity 34 ppt/ 1.024 SG 34 ppt/ 1.024 SG 35 ppt/ 1.025 SG 35 ppt/ 1.025 SG
Calcium 450 ppm 450 ppm 430 ppm 465 ppm
Magnesium 1350 ppm 1350 ppm 1280 ppm 1390 ppm
Alkalinity 11.5 dkH 11.5 dkH 8 dkH 12 dkH
Nitrate 5 ppm 2 ppm 0.25 ppm 2 ppm
Phosphate 0.1 ppm 0.1 ppm 0.02 ppm 0.1 ppm