Ok i 've got a 7" cobra and hopefully 2mo ill get another two, so il have 3x 6"-7", and i have 2x 3" red/tiger's obviously its a no go at the mo, but i figure, the reds will eventually catch up with the cobras in size, and when they do, could i tank them together, i no ideally they should all be the same size and tanked together from youngest possible age but could it work? i figure a big tank will be needed, and i was thinking 7'x4'. and any chance the 5 of them working in a mixed monster tank? with 3x aro's, fl/sp gar, rtc, aft, poly endi, poly ornate, bowfin, SAL and a ray? this way i could go huge on tank size, like 10+'x6'... if it could work, how big a tank would be optimal for this sort of a mix?