Originally Posted by Sniperhank
Leave it. Don't disturb the sandbed. There is good stuff in there and detritus shouldn't lay on the sandbed if there is good flow in the tank. Also, some say that disturbing the sandbed can release toxic stuff that is trapped in there.
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+1, assuming you have proper flow there should be no need. Detritus shouldn't be settling on the sand. I doubt that if it's done regularly that ant toxic build ups would be released, but you could've stripping it of beneficial life forms that reside there. I've never vacuumed a sand bed in a sw
tank in the last 5 years and never had any problems with them.