My tank is a 125 display with a 50gallon xenia refugium and a 20 gallon calurpa/mangrove refugium. All tanks are plumbed together. I have tons of mysis in all tanks. When I run a flashlight across the display at night, they scatter--looks like the sand and rocks are moving. Don't you think they would supplement their diet with the real thing versus frozen mysis?? And on the days that I'm not feeding brine they have a constant supply of dried seaweed.