Hi, ive currently got 4 discus, i know they're better in odd numbers, so i've fallen in love with one other discus in my LFS... i was wondering how i'd go about introducing him into the established tank? .. my LFS say i should turn lights off for 24 hours and just release him (after aclimatization) and let what happen.. hapen cause the pecking order is going to be re established now, noway to avoid it?