Concentrate on the ammonia, nitrite, and nitrates first. When the ammonia and nitrite levels are remaining at 0, keep an eye on nitrates... denitrification should happen through your live rock, sand bed, etc(I do not recommend biological filtration such as floss, sponges, or bio-balls). PH should be anywhere from 8.0 to 8.4 STABLE. Temp should remain stable from 78* to 82*. And Salinity should remain stable at 1.024-1.026. Once this is achieved, then begin to worry about calcium, alk, and magnesium tests. Get some good quality test kits(I like Saliferts). BTW, NEVER use copper in your system!!!