You can sift the surface of the sand with a net or you can gravel vac it along the surface. You will end up sucking out some sand and needing to replace some over time though. Sand is definetly the best substrate to use. Gravel gets waste stuck in it and is harder to clean you'll find sand very easy to clean. All waste sits on top of the sand. In my opinion I like regular colored sand over the black because it's more natural looking and easier to see the waste to know when it's time to clean up.Oh wow that looks amazing thanks that about exactly wat I was looking for! Wat about cleaning it? I would assume gravel vac would still pick up the sand so how would I go about that?
Hello; This must be different than coal ash then. We had a big problem with coal ash at the Kingston power plant near Kingston TN a few years ago. One of the ash ponds gave way and flooded the area. The ash was considered toxic and was an expensive cleanup.its coal slag a byproduct of coal burning facilities. its ignert and chem free meets drinking water standards. http://www.ati-blackdiamond.com/our-business/frequently-asked-questions.html