Mirrors, how long period?

[JonasRoman]

Introduced my new Ac pyroferus (juvenile) yesterday. Despite a day in acclimatise box and released at night, first thing in morning the powder blue was very nasty. Ac pyr back in accli box. Will try again tomorrow but now add 2 mirrors to get powder blue occupied. If this works, how long would you let the mirror be there? 2 days? Even if it works I do not want to stress the powder blue unnecessary

Jonas

 

[Channas]

Remove the mirror and let the new guy be in the acclimation box until the aggression decrease, use the mirror when you realese the new fish if you see the powder blue being a jerk again.

Give it a few more days in the acclimation box

 

[ReneReef]

Agreed, one day in an acclimation box is much too short. Wait until the new fish is completely ignored, that will take several days at least.
Then move the box to another place in the tank and wait again to confirm all aggression has subsided.

Also, you have a very small tank for the many big or large growing bossy fish you keep. Over time this will not end well.