Adding Corals

[MMAX]

I picked up a Nutrafin Master Test Kit last night. Here's my parameters...Ammonia 0, Nitrite 0, Nitrate 15 mg/L, Phosphate 0.5 mg/L, Calcium 340 mg/L (it says optimum range is 400-450), pH 8.3, and Alkalinity (KH) 130 mg/L (it says 105-125 is ideal). Temp is 27 celcius and SG is 1.0245. There were no tests for magnesium in the kit I bought.