I know you pros can answer this one... I have a 75gal with 4inch sand bed 90 lbs live rock ,260 watt pc lighting and a 20 long refugium with tang haven . Got 3 clowns and a clean up crew. PH 8.2-8.4 Ammonia-0 Nitrite-0 Natrate-0. I am using Calamax 2 part and when I add part b I get like a snowstorm in the tank. Calicum is reading 290. What is going on in my tank??? I'm only 7 weeks old (new)