If you are running pressurized, you can start the co2 an hour before lights on which should get it up within normal levels by the time the lights come on. CO2 is always offgassing all night and day anyway, you might go through a little more for the first hour each day to bring levels up but many people do this with no problem.

Fluctuating co2 levels only causes algae when the lights are on. Algae can't grow with no light. The key is to keep co2 levels stable at the same level when lights are on.

Also realize that if you start co2 for an hour before lights on, the plants won't be using any up, so levels should rise faster than if you tried to bring them up with lights on.