i feed them smelt most of the time usally 2-3 times a week but also frozen shrimp and pollock once in a while.
i usally lose a couple liters of water a day due to splashing even with lids completly covering the tank.
here a couple more just to compare, first look at how clear the tank is befor feeding them and the part of the tank between the overflow and the front is 24 or 26" and the big guy takes up almost the whole length,
and look how much crud is stirred up after feeding them.
