Your yields without CO2

Hopefully this works off my iPhone haha.

I'm debating on nixing the co2 generator in the new room due to the portable ac just sucking it all out. I'm at 450 ppm average without the generator and about 500 with it.

Question here is what are you guys yielding per light without co2? I run 2 1000 watters and about everything advanced nutrients sells. I can pull 2 pounds to 2.5 per light.

Someone inspire me

I pulled over 2 from a 1000 watt hps, just got a second 1000 watt, we will see in a month or so what the outcome is.... Never ever used co2 in my garden.

Damn not bad, can anyone else compare?