carlos413

I am planing on geting a co2 set up not sure witch one yett. My question is do I need to put my co2 injections on a timer so they only inject co2 in the day time? If so... Or not why?

Nate McFin

Some people do some people dont. IMO it is a waste of Co2 (and money) to not have it on a timer. The plants dont use it at night so it builds up. In some cases you can kill the fish with too much Co2. I would have it on a timer set to turn off 45 minutes before the lights go off. This way the plants have a chance to use the Co2 in the water before the lights go off and they quit using it up.