For the past 6 months I have been using a combination of Bionic, sealab cubes, reef buffer and reef builder to balance my reef. I can maintain my calcium but I need to add a lot because my clam. I am having a harder time maintaining my ph. My LFS advised me not to use a lot of buffer, because it contains something which is bad for corals. I do not know how else to raise my ph, so that brings me to kalkwasser. I do not have a ph meter (eek...I have already spent too much on my system) how can I be sure not to raise the ph too drastically? Does anyone have any suggestions for using this additive? Any brand name preferences? My brain coral is counting on you!