The biggest problem I've found with sand is not keeping it clean, but keeping it in place. I want my SPS tank blasting with flow, and no sand will stay put. If you don't need major flow, I think a sand bed is fine. For SPS to thrive, and to eliminate dead spots, well I think it's very difficult to achieve with loose sand.
I do much prefer the look of a tank with a sand bed, though. Again, this is why I'm so happy with the epoxied sand bottom.
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Deep Blue 60 gallon cube: Setup in progress.
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