Stink I already am using CO2 but the whole theory of going on a 18 Hr day with 6 on 12 off that is crazy. The CO2 will increase the yield but I never heard of it speeding up the flowering cycle. You have seen it or done it the hole 18 Hr day theory? I find it to be fascinating if it cut's back on flower time...

Thanks for the info GL420:jointsmile::jointsmile::jointsmile: