ok so I got aan exhale bag at the garden expo and while Im not running specific tests to see how much its raising the Co2 in my tent I am definately seeing some differences in my plants to the point Im thinking of buying another to help get some extra Co2 in the room. plants are just past day 28:
first is how Im hanging the bag over one side of my tent...its kinda off center cause my light is on a light rail and I didnt want it to be in the way:
next is a plant that has been under the exhale bag for about a week:
now a plant that hasnt been under the exhale bag at all:
Idk how well the difference shows from one picture to the next, but the plants that have been under the exhale seem to be bigger by about 50% so I definately see the difference.
and one last pic of the rest of that side of the room:
and for shits and giggles the other side of the room, hopefully ready withing the next 2-3 weeks (checked trichs and they still clear)