I have been a long-term follower of these forums with the plan to "join later" always at the back of my mind. I now need to ask some questions, since I am suffering from several pond problems I have never before seen. The long and short of it is that I am faced with fish ailments that will not go away. To help rectify this, I am going to start another series of PP treatments to my pond. I have used these for years and have had positive results, so I am confident with them as normally administered. It has been suggested to me that I let the PP pass through my bead filters to help cure the problem. This will of course kill off any good bacteria I do have, but I can reseed it and get it going again in a few days. I just wonder if anyone has had any experience doing this, and if it worked favorably. Any input anyone has would be greatly appreciated.