Mood Change

[Whitey]

Iv just installed a dark blue UV light and when i just have the darker light on instead of my main light, i notice the mood changes quite dramaticly, instead of swimming around the whole tank they keep close to the ground/and caves and chase eachother much more than normal.

Im quite worried can anyone help!?

 

[WILDER]

Just the lights not used to them, they will settle down.
Maybe just have them on a while and build the time up each day so it dosn't stress them so much.