Hello. I'm new to this site, this is my very first post! My question is, what is a good and inexpensive way of lowering pH? I was thinking of setting up a 29 gal discus tank, and right now I'm in the middle of doing a LOT of research. My tap water is about 8.0, and the water in my 29 gal tank right now is about 7.6, but isn't this too alkaline for keeping discus? I've read that the pH should be 7.2 or below, so how can i inexpensively get it down to that level? Any help would be awesome! So far I am enjoying this site!