Now that I've got the BBB method down and my pool is clear...now I have this issue.
I've got a two speed pump/cartridge filter. When I vacuum the pool and there is visible algae/dirt on the bottom, it seems to blow back in through the return. I usually vacuum on high b/c obviously the suction is much better, but that in turn, makes the stuff blow back in even more intensely. Before I know it, I've got a murky pool instead of clear water with some dirt on the bottom. It's very frustrating. What could be causing this? My husband says it's just b/c the debris is so small, it's not getting filtered by the cartridge, but shouldn't I be able to vacuum this stuff out instead of just getting it all stirred up and waiting days for it to clear the filter? I know other pool owners are able to do this. And yes, my cartridge is clean and I do change it frequently throughout cleaning. This happens as soon as I start, however. Any ideas? Thank you!