I recently got a pair of female pygmys and was wondering what is the best way to feed them? I let about 8 crickets go in the tank but they keep hiding in the substrate. I tried packing it down a little to make it harder but it doesn't seem to be stopping them from hiding. I'm worried that my little pgymys wont be able to find them. Does anyone have any suggestion about this? Also, should I remove the crickets at night?