But whereas some shellies will dig to bury their shells, multis act like they're digging to get rid of the sand. My dominant male will try to do the same with plants. He'll grab a sprig of flame moss that's gotten into the shellbed, and carry it over to the scrap pile and toss it out.
I see. Well thats good to know
Substrate is mostly for aesthetic purposes anyways. Some fish need it but for others it really isnt a necessity. I like it though