What is the ideal specific gravity, temp., and light times for a reef tank? I have had my temp set at 80, which goes up to about 83 with the lights on. I run the actinic lights on my PC for 12 hours and the 10k's for 10 hours. The actinics one hour before and after the 10k's come on. I try to keep my specific gravity 1.023-1.025 reading it with an ATC Refractomiter. Does this sound good?