quick co2 question
I have a 36 gallon tank with co2 I run the co2 while my lights are on(about 8 hrs). The co2 turns on ne hr before my lights come on and and go off 1hr before they go off. Every morn when I wake up my drop checker is blue and after a few hrs it turns green and right before it turns off greenish yellow. Is this ok? I know Im aiming for the greenish yellow. Should I increase the co2 time?
Thanks for any suggestions.