04-13-2008, 03:44 PM
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I personally, do not like using sand, although a few of my tanks are currently using it. The reason for use is for the fishes' benefit. Sand compacts too easily. This can create dead spots of bacteria in the tank. While, in some cases, it is necessary, its drawbacks, imo, far outwiegh the possible problems that one could face in its use.
While it is cheaper, I will continue to choose gravel over sand whenever the choice does not affect the well being of my fish. Finer gravels, many times, are good alternative.