I have a 29gal. tank, Skilter 250, cascade filter for 55gal, 1 powerhead 60gph, 60lbs live sand, 25lbs live rock, plentium, odyssea lighting 130 watts 50/50s. I have 1 yellow tail blue damsel, 1 royal gramma and 1 pajama cardinal. Critters are 1 coral banded shrimp, 1 feather duster, 1 flat...