Cloudiness in Crayfish Tank, help?

Dec 14, 2010
32
0
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Sunny California
#1
I have my blue crayfish in his own 10 gallon set up right now and it seems I just can't get the water clear. I bought a new filter, an aqueon filter for 20 gallon tanks and do every other day water changes. The water remains a brownish cloudy. This is the first tank i've had sand versus gravel in, is this a factor? What else can I do?