i found out that its best to keep them a little hungry, that way they will eat most if all of what you put in the tank for food. i would do like what Mellor44 said, cut the servings in half. also i noticed with my p's that they want fresh food and not too much of left overs. if some fish are left in the fridge for too long after thawing, they won't even look at it which kinda pisses me off that i spent all that money on them and they don't eat it. FYI: i use black water extract in my 75 and my 55 and it seems like the fish are more active and showing their colors more, it contains vitamins and nutrients from peat moss. has anybody else used this stuff before because it seems to work great if you don't mind your water in the tank being a little darker.