I notice he comes out and sifts sand when I turn the pumps off when i feed. But when i crank them on again maybe 30 minutes later he freaks and hides under the LR. I know these guys can stand a lot more current than I can provide because I have seen clips of this. I have live sand...and I put a little extra NLS on the substrate (hard to tell if he takes it of sifts it out of his gills. What should I add to the sand to improve this guys chances. I can't afford to lose this guy he is waaaaayyyy to cool. Live food would be better if it could sustain itself. Need suggestions I've researched but get varied answers. Some say they will live off the LS but I really would like to add critters if possible.