If you have a spectra controller or some sort of controller
Also if you link it to the the higher level halo it will control both.
I have this on a 5g fluval spec
What's up guys it's time for me to shut down my nano and move this light
I'm asking $190 for the light and the arm
I'm located in SD I can ship also
Here is my number 6198552667 for the fastest response