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6 years in my current tank. Fine grained sand of varying depths in the tank. It is about 3 inches, for the most part, but has built up to about 6 inches on the right end of the tank due to flow. There is a very shallow spot at the very front of the tank and is almost bare there due to the flow patterns etc.
It has worked well for me. I usually vaccuum a bit of the surface of the bed to remove any detritus that builds up on the surface. I do not disturb the deeper layers of the bed.
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Hello, my name is Joe and I am a reef addict.
......Hi Joe..........
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