My parameters:
Salinity 1.026
Cal 500
Alk 12
Mag 1450
PH runs from 7.9 night to 8.2
Ammonia, Nitrite, Nitrate, and Phos are all 0.
I started adding 1 tea spoon of Kalk per gallon in my top off water because I ran into a porblem with my PH dipping down to 7.7 or 7.8 because of excess CO2 from my house. Tank is in the basement and the house heating was running alot because of winter and the tank was not getting much fresh air. I think using the Kalk has really got my LPS growing great and keep my Cal and Alk maintained. I can go up to 2 tea spoons per gallon when the corals start using more.
Right now I am running my 110 X 4 VHOs 8 hours a day. I have 2 white and 2 antic bulbs in my setup. When I start adding my SPS colonies I will start running my 250 X 2 MHs with my VHOs for about half the time of my VHOs to boost my growth.