For a 4-5 inch WC Kelberi that is stressing out constantly, should I keep lights off for like 20-22 hours and only expose him to some of the light? Or should I get him more used to it by keeping them longer? He only eats minnows right now, havent gotten him to come to the glass for em yet, he is always hiding and showing stress colours. Have 3 plants in there for him but no substrate, maybe that is next step. Hate to see him so stressed, have purcahsed plenty of WC cichla before and they didnt take this long to adapt, same tank and everything.