So I got my 10G tank up and going.. using a normal filter for the cycling while I find a sponge filter :o! Only a few questions.. could I keep a few Thai Micro Crabs with the RCS since they are so TINY.. and also a few of them snails that stir sand pretty well since I have a 1 1/2 inch sand bed as a substrate. Also I was wondering if theres another way to get away with no filter in a 10G RCS with some other small inverts.. tank. No fish will be in this tank its mainly for breeding RCS to feed to my ID sharks and Angel fish in my bigger tank. Please responde.