I am almost dont setting up the rack I just built. I am using flexwatt on the back wall for heat. Rack will be stored in closet.

My question is, do you have to use a day/night cycle with lights if using a rack system? I can accomidate if needed with a timer but was wondering if I had to use the light cycles to keep them healthy.

If it's needed do I go by what it actually is in my area for day and night or is there a specific time schedual?