I think you should take them out, But that is just my opinion. You mite wake up in the morning with the little reds as feeders, heads floating, Granted they dont cost that much but a waste of money and piranhas. Just my 2 cents, and I think alot of people will agree. It mite work it mite not.
yeah its not the greates of ideas... I know my local lfs had not much room and they got in little 1" P's and had some extra 2"+ P's still kicking around....well they had to seperate them in a hurry .... I wouldnt do it yet...too small....too big a difference right now