HI guys, I just need to know when CO2 is needed for a closet grow?
My previous attempt was a small scrog (1.5 x 2 foot) with 3 plants and 250w hps for flowering. 2 or 3 week veg time in peat moss/vermiculite/perlite with Biogrow nutes.
My harvest was particularly small though. Think I got slightly over 2.5oz. Below is a picture of a small section of that srog.
I have notice that the lower half of all my buds were extremely airy while the upper half were much denser. Basically the lower portion of the bud above the screen were almost just sugar leaves. The picture makes it look better though. It was extremely sticky but just didn’t have any weight. A lot of the nodes had nothing there, just stem, covered in crystal, but no bud material at all.
I’m sure at 2.5inch tall, that 250w hps should of still been able to penetrate through the entire bud, so my question is could the lack of CO2 be the cause or is it the light? My closet was standing almost right up against the wall so some of the exhaust air would move back to the intake and although it would be cool enough, I’m sure the co2 would be completely used after a few hours of this.
My current setup is similar, but using a slightly bigger scrog with a 400w HPS, but here, the closet is in a closed bedroom with NO access to outside air. I exhaust into the room, so that air probably circulates quite a few times through the closet, obviously loosing C02 in the process. The only air coming into the room is the gap under the room door so I’m kinda thinking that after circulating for some hours, the plants would of used up all or most of the CO2 in the room.
4th week flower now (flipped to 12/12 on the 10/07 but started counting day 1 from the 17/07), Hairs and bud structure looks good, but I know they start packing on material in the last 2 or 3 weeks so I’m wondering if 2 DIY, 2-liter CO2 bottles could help - just in case I’m right.
Has anyone ever used these DIY CO2 bottles (water/sugar/yeast) and could you see any difference in plant growth?
I found many videos on how to make it and people using but non really say if its made any difference.
I’m not trying to get super yields here, just by logical thinking, it seems that if a closet is in a closed bedroom, I would need a source of C02.