That sucks but oh well, guess I should have soaked it for a week or so before putting it in the tank. Lesson learned. The fish don't seem to mind it lol. Acting like typical happy oscars! The filter pads I have added to the sump have been collecting a bunch of hte brown but as soon as I try to remove them it all washes out of the filter material and back into the sump so I'm just turning off the pump when I do it. Then I drain the sump dry, fill it with some clean water and drain again to get all the horribly brown water out of the sump. Then I did another 50% change in the main tank. Still murky, but its looking better this morning after running all night so I figure by the time I get home from work late tonight it should be looking pretty good again. By the time I do this 2 or 3 more times I think it will be in good shape. Thanks for the advice.