I always use the coarser grade not the sugar fine sand.
Doesn't get stirred up as easily.
I keep lots of leopard wrasses so some sand flies up when they dig themselves in, but no sandsifting gobies who like to drop sand on all your favourite corals.
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If you see it, can take care of it, better get it or put it on hold. Otherwise, it'll be gone & you'll regret it!
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