Ok I just fed him until he didn't want anymore. He ate 4 pieces of krill. My tank isn't that old but the rock I put in was already partially cured. I have a 90 Gal 110 lbs. of LR. 150 lbs. of LS and pods all over the place. I also feed the tank Mysis, plankton, formula one, krill, flake, and nutrafin max slow sinking morsels. Not all at once of course. I have 2 false percs, a firefish, a royal gamma, a ton of nassarius snails, blue leg hermits, turbos, 16 emeralds, a decorator, the curly Q, 2 red buttons, and a bunch of feather dusters that grew out of my LR.