Hey King.. all the best with your new aro.. what are his/her tankmates at the moment.. how big is your tank.. any pics.. the biggest question about food is would you be able to provide the same(money wise) for a long period of time.. shrimps, tilapia, pellets are great.. you could try feeders occasionally.. once a month.. my aros used to do the lying down at the bottom of the tank when they were around the same size.. but now they really dont.. they get used to the environment and people over a period of time.. by lights do you mean tank lights or the room light.. if you have your tank indoors or outdoors and plan on switching off the tank lights at night jus leave a little night lamp on around the tank.. the red depends on the feed and the fish.. some lose it some retain traces.. all the best again.. cheers..