Like it says i have to put in a new liner in my pond. The one on my avatar. I think im doing this right. Im going to drain it half way like im doing a water change and then im going to put the rest in 55 gallon drums. The bottom of the pond has very little sand that i will try to keep. Swapping liners shouldnt affect my biological part of the water should it? The liner has produced a small pin hole it i do believe i keep finding water on the floor every so often. Im goimg to put my two rays and my gars and clown knife in a tub until it get them swapped out. I guess i should put an air stone in there also. Would it hurt the rays if its somewhat crowed in there for awhile until i get it swapped out? I have to dry the under neath also before i refill it. Its going to be a big job but i dont want to mess up the biological part of it. Its pretty well an astablished tank. Any info would be greatly appreciated.