As I do more research I get more ideas in my head. Seems a lot of websites are pretty vague in their descriptions, so I ask you this...... I have read that fish need a variety of foods in their diet, including veggies. The articles I viewed didn't mention what type of veggie to use. I am assuming an organic lettuce or something along those lines. Should I break the lettuce up, or hang a big chunk in the tank for the fish to nibble off of. My filter is a hang on back filter if that helps. I have been putting flakes, cichlid pellets, and tubifex worms in the tank, all of which has been eaten, but I want to make sure my fish have a diverse diet.