Originally posted by wocka
my sand is about the size of 1 centimeter
what do you mean? that it's 1 cm deep?
also, what kind of snails do you have? blue leg hermits will consume leftover food and algae, but not necessarily the built up detritus, some nassarius and cerinth snails will eat detritus though, perhaps you're overfeeding?
also, once again, live sand means there's bacteria in it, not critters, your current sand is live, if you want critters in your sand make sure you buy reef sand with critters in it, or just buy some critters for your current live sand, since all you need to do is get rid of the detritus, not necessarily the sand itself...