iv had my tank setup for about 3 months and i had bought live sand so now i have about a 2-3 inch deep sand bed. I have always wanted a sand sifter to help move the sand around, i just recently noticed small white dots on the glass they are relly tiny and seem to look like copepods. im not shure of what it is and i dont have a nice camera to get a close up but which fish would be best for sifting sand and can eat other foods other then copepods because i dont want hm to eat the only ones that i have. thanks