Basic Water Parameters for corals - Calcium 450 ppm, Ammonia 0, Nitrite 0, Nitrate near 0, Phosphate below 0.3, pH 8.2 - 8.4, Alkalinity 3.2 - 4.5 meq/L, Temperature 80-84º, Salinity 1.025 - 1.027. Obviously coral health and growth will differ on species, lighting, etc., but this will get you in the ballpark