Looking for help on feeding my catfish..I've had him 2 weeks now an still havent been able to get him to eat..hes 10-12 inches long in a 220 gallon right now..I've tried tilapia,shrimp,feeder fish, and worms..wont touch any of it..hes a good size an looks healthy but just havent gotten him to eat yet..he seems to be alot more active when the lights go off..I've already ran water test an everything looks to be right on point...any ideas or advice would be muchly appreciated...thank you