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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I have a 2 1/2" to 3" sand bed, just wondering if it's bad to vacuum the top 1/2 "? Would I kill off to much
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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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Interesting thread. I've always vacuumed the top layer of the open sand bed as part of water changes. Never noticed any bad effects.
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