I have one in a thirty gallon long with 340w VHO. This thing cleared out the tank of 1 royal gramma and 2 firefish. Now, believe it or not, a saddleback clown is hosting in it. Crazy thing. I feed 2-3 times per week. Sometimes some "borneman" mush, sometimes a whole silverside. It has doubled in size in the past few months.
Garrett.