I have an all in one system and i am having trouble keeping the bottom of the sump clean. There are three chambers one for the skimmer one for the media basket which i made and one for the return. I cant seem to keep the bottom of the skimmer and return side clean. The middle chamber i have directed the water down through the filter media and back up and the constant bottom flow keeps it clean. Besides using a siphon to vacuum the bottom clean every week, what do you guys do to keep your sump clean? Would adding mud/crushed coral help?


