another question from little old me, i have dalmation mollies that seem to stay at the top, loaches,cats,plecos that are at the bottom, a platty that ive named the plastic platty cos he doesnt seem to move and little neons that whizz round so fast together that you barely see them, what stays in the middle, should i get some more platties so that "plastic" isnt on his own? he does seem to be around the middle, wish the mollies would come down and the loaches not hide cos they are my favourites. any suggestions anyone