I am new but I also had a nasty brown algae problem. If it continued, I probably would not stay with it. Our water here in Oregon is very pure and clean and was told by more than one LFS
or distilled water was unnessesary. Well, my tank has now matured three months and it has miraculously disappeared. I started getting a powdery green algae on the walls but it only lasted a week and was easy to wipe off. I had started adding a clarifier, like 3 drops per day and my tank is now consistantly crystal clear. My fish are very happy and so am I.