Originally Posted by JimmyJBBPJMT
Is there any way to temporarily reduce the aggressiveness of larger males so I can add some smaller cichlids to the tank without them getting bullied.
What type of cichlids are we talking about here? If you are talking most Rift Lake African species were the large males are claiming territories, making the tank dark isn't going to help much. Moving the rock work and decorations around so you force the dominant males to establish new territories will help more than anything. Additionally adding more all at once rather than a few will also help.