I bought a 2nd hand 4ft, 120 gallon tank & stand today. I want to seperate my Africans from me Americans, I have got rid of 2 Zebras, and still have an 8" Venustus, a 6" Polystigma, and a newly purchased 7" Livingstoni to go into the 120 gallon, will this be sufficent enough room for these 3 to continue there life in?, if so doe's any one have any suggestions for a new tank mate? :look: