Sep 16, 2019· Hi! Is there any up/downside to a particular grainsize for sand in a mixed reef tank? Any particular brand? Better to purchase dry or live? We've always used the live ultrafine particle sand, but I have been wondering if a coarser grain has any benefits?
Sand grains are between the size of gravel grains (which is from 2 mm to 64 mm) and the size of silt (which is around mm to mm). It is found on beaches, and in deserts . Sand is most of the time made of silica (silicon dioxide, or SiO 2 ).