Adding LEDs
 

I’ve got a pair or LED light fixtures I bought secondhand and it was working great for a while but because the tank is long and I stock morecorals, there are some weak/dead spots of light. I’m looking into adding another LED light fixture from amazon. There is room in the mount kit I have to put the fixture but moving the current lights and acclimating the new ones will cause some changes I’m just wondering what I can do to minimize those changes and make the change go as smoothly as I can.