I have managed over the past month to get rid of algea with chemicles.I saw an article on Barley straw and thought it was a good natual idea. I put a bag of the pellets in like i do oyster shell and over night it has turned the water a sludgy brown and when i cleaned the filter out to see what was being filtered through it is slimey. So ive taken it out. Will it clear through the filter ok. Thank you