Just wondering how sand works as a substrate. I think it would be a nice look, and it would give a place for my trumpet snails to burrow. I wouldn't do this until next summer, but I would set up my spare 10 gallon with sand, cycle it, and then move everything over. (I'd probably do it planted as well) How does it work? Do the bacteria just grow on the sand like they would the gravel? Anything else I would need to know?