I am trying to deal with my minor BBA issue. I have been using interrupt photoperiod. However, I am not sure if my CO2 should be on during the off period. Light is off from 2 pm to 4pm. Right now, I have my CO2 to shut off 1 hour after the light is off and on 30 minutes before light turn on. Should I completely shut off my CO2 or just leave it on?