I don't think 6 discus in a 135 in addition to what is there now will push the bio load to the limit. Otos might as well not exist, emperor tetras are small fish, and rams are 3-4".
__________________
Eheim Pimp #254, Eheim Wolverine #1
55 Gallon Work in progress
10 Gallon Shrimp Tank
10 Gallon Planted QT
20 Gallon Shrimp Tank (Work in progress)
|