At first, the sand in my aquarium looked spotless, but it is almost impossible to maintain it that way. No matter what I do, there seems to always be a thin layer of particles that sit on top of the sand, even when I use a gravel vacuum or a turkey baster. If anything, it only helps a little, and my sand just gets dirty within a week again. Does anyone have luck keeping white sand looking brand new? I don't know if keeping it super clean is realistic or not but any advice would help. I've attached some pictures.