I've read a few threads regarding the use of baking soda for a water buffer. I have 3 tanks with a mixture of CA/SA cichlids, and I am wanting to finally bring them home (I have them at my girlfriends apartment-Did I mention shes real understanding?) and the water quality here at my place is ridiculous, long story short, I bought a Kent Maxxima RO system and need to harden the water and raise the pH. Any other suggestions for commercial buffers or just tips on using baking soda?