6 foot,18deep, and ya for life. i know what your thinking. male get huge but they dont. festa grow slow as hell and the largest male ive seen on this site is 13 inches. females 8-9 inches. thats pretty much tops in captivity. so ya i would keep 4 in there for life. ill have to use my towell method when they get out of hand.mbunafishkeeper;1610467; said:whats the dimensions of the 125? ure gonna be doing all the festae in the 125 for life?