tomato clownfish stirring a mess

[mrcopitr]

Hi guys,

I've added my first fish on the week end in my 4 week old system....a tomato clown...but the little bugger is stirring a mess every night when going to sleep(do fish sleep!!! ok..at least taking is little nap). He diggs a hollow depression every night in a corner of my tank...I have a 4 inch deep very very fine sand bed (home depot Brand)...so my tank become clowdy for hours and I have to dust my live rock almost daily....I know that an anemone could solve this problem...but my tank is not ready for this type of demanding invert.

Could someone suggest how I could solve this problem...other than getting rid of the fish....

Hoping to hear you opinion on this

Best regards
Marco