I purchased a bag and rinsed it twice before putting it all into the tank. Its been a a week and I've emptied the tank twice, running a polyfilter, extra flow etc but I am not having much luck in removing the dust. The second I brush the substrate a cloud of dust arises and completely clouds the tank. Is this normal? I'm not sure if I should just keep at it or get rid of it.
Is there anything else in the tank? If not, and there isn't too much, I'd put it all in a clean garbage bag and run a hose into the bag until the water coming out of the top of the bag is clear. I had to run a garden hose on full blast for about 10 minutes to get clear water.