Chuck, or anyone else.....
i also forgot to ask, i having small water chemistry problems, i can not keep my CA or dKH up and in balance. i do my 5g w/c every week and my w/c
water tests real good for CA 400-450ppm and dKH 9 - 10.5, but i can not keep it past 360ppm Ca, and 8 dKH in my tank. what are some things i can do? everyone i ask tells me to do w/c's but i do them weekly. and if i dose my superbuffer dKH and my liquid CA it will go up for one day then it will drop back down again. it will not stay put.

and my corals are not liking it, very very slow growth with all of them. any ideas? sounds like a buffering problem, or maybe a MG problem. any help?