Is this Mustard Algae or something else? I had algae before and it was green and filter would be green. The stuff I'm seeing at the bottom of the pool is more of a yellowish brown color as in the filter. I have scrubbed to the pool several times. My chlorine is high because I recently shocked it. My pH is 7.5 and my alkalinity is 80. I have vacuumed it out a few times with the filter out of the pump and just emptied that water out of the pool. Is it possible to use a flocculent and then just throw the filter away that I use with the flocculent or will it ruin any other components of the pump?