I keep 8 frontosa's, 2 Cyrtocara moorii, 3 Rastratus, 1 Dimidiochromis strigatus and a common Pleco. Ive been told Limestone is good also, but i cant get ahold of ANYTHING, have tried absolutely everything. I didnt wanna use all the buffer but I got told by my LFS to keep it buffered, but I...