Not a fan of the crushed coral look so I prefer to stay with sand. I used to have a problem with dust storms in the tank if anything disturbed the sand but I now steer clear of the sugar sand and I actually mix a few different sizes of sand. In my current tank I have a mix of roughly 20% fine sand, 60% fine/med sand and 20% coarse sand. Kinda just played with it in the tank until it looked the way I wanted and wasn't too dusty. I did this using left over sand for previous tanks.
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