Aloha, Joefarmer

I will second Bigworm's advice.
If your temperature is below 85 F. CO2 may do more harm than good.

Led grows can be tricky the first time.
Can't treat hydro like soil, can't treat leds like HPS, etc.

I suggest that you get your first indoor grow dialed in.
When it's right, start the next grow with CO2.
You will have a yeild w/out CO2 for comparison, and then you can see if that 50% claim has merit, yah.

Not a "double-blind" experiment, but good enough for thinkin' on.:rastasmoke:

Subscribed.

Weezard