Just a couple of comments on some of the products that have been mentioned in this string. The manufacturers of Discus Buffer (which is high in phosphates) also make a product called Acid Buffer which is phosphate free. It has the same effectiveness as the Discus Buffer without the algae side effects. Its easy to spot on the shelf - the crystals are bright pink! The Waters of the World line may seem expensive but do get good results. George Richter wrote: > I think Phillip made a very good point about the soft water. I use the > Discus buffer but because my water (mostly RO with some tap) is soft > already, I do not have to use much buffer to get it stable. If you use > no buffering agent it is hard to stabalize the soft water. Thanks for > the extreme phosphate warning though. I never imagined it could > actually kill the fish. I have tried the peat things and the PH just > seems to wander all over. I am suprised to hear about problems with > "Waters of the World". I have heard good things about it but I thought > it too expensive to be practical. Anybody else use that? > > -------------------------------------------------------------------------