Just so you know, almost every tank in my area is experiencing problems right now. We are all thinking the water source was poisoned somehow because we all use RO/DI, have very different tanks, but all seem to have similar problems all happening right after some heavy raines and the local cities dumped an excessive amount of chloramines in the water (heavy sliming in the tanks, filter socks glogged in under a day, and cloudy water). We are thinking it is poisons from the farm fields that had run off into the water table since he haven't had a good rain in years. Happened to too many of us all at the same time period and all using RO/DI water made from tap water. Not a fun time for any of us either.. so don't feel alone. IT SUCKS.