The stuff is so thick when I open the pool, if I vacuum thru the filter the pressure will rise to 30lbs in about 10 minutes. Its like vacuuming mud and the filter can't handle such a continious flow, it eventually will start to come
back thru the returns. I really don't believe its pump or filter problem.
This stuff is black and taking it to waste bypasses the filter completely and
takes it out for good. Need to add a good amount of water when this process is completed however.