It seems as though you are a novice fish keeper and so I would reccomend reading up on the cycling process in one of the stickies on the newbie forum. It also needs to be said that L-46's are very delicate fish. They need clean water, daily water changes aren't out of the question, and I wouldn't go more than 3 days without doing one for them, the other thing that is critical for their health and survival is a high tank tempature. Minimum water temp for these guys should be around 82 degrees F, with a more optimum temp at 85-86. As said already these guys aren't herbivores and need a protien rich diet, this isn't to say that they won't take a slice of zuchinni every once and a while, but not as a staple diet. Frozen brine, mysis, and bloodworms are excellent food for these guys, shrimp pellets, freezedried krill, and really anything that is high in protein is good for them. You may also want to look into making a beefheart recipie, which you can find on most discus breeders websites, its high in protein, low in fat, and will make those little guys happy I am sure.