I've used this stuff about 10 years ago and it worked fantastically. Recently I ordered the bulk bag and noticed that when I rinse it I can never get it to run clear. If I agitate it a little it gets worse. Am I doing something wrong or did I get a bad batch? I'm on my second bag that I'll probably replace today or just discard the remaining 4 bags because I'm starting not to trust it. I run it in a cup where a filter sock usually goes. Carbon and floss go in the other two sock positions.