I have regular aquarium gravel in the tank and decided to make a sandpit for them. I dug a circle in the gravel and filled it up with sand. They are completely ignoring it! I just moved a plant closer to it, thinking they may want some cover if they are going to go near the sand. So far nothing - they sit at the edge but won't go in the sand.
Oh well, I tried!
Oh well, I tried!