Co2 Question for flowering

Mount

Mount

Well-Known Member
New grower about to move a couple of plants into flower in a couple of weeks. I have limited space, using a spare bedroom right now for veg and the closet is being used to flower. The closet is 30"x48"x96" and is completely sealed when lights are out, but open during lights on the dissipate heat. I can't modify the room or closet to vent since I am a renter. I have seen that CO2 helps especially during flowering to increase the yields. So, two questions really, is it worth it in my situation to even consider CO2? and I had seen the exhale CO2 on Amazon that seemed easy and a practical possibility for my closet and situation, has anyone used this? Oh and third, kinda like the first part, should I save the 30 bucks or go for it? Oh, forth, should a newbie just forget what he reads about CO2 until he has more grows under his belt?
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hotrodharley

hotrodharley

Well-Known Member
Mount said:
New grower about to move a couple of plants into flower in a couple of weeks. I have limited space, using a spare bedroom right now for veg and the closet is being used to flower. The closet is 30"x48"x96" and is completely sealed when lights are out, but open during lights on the dissipate heat. I can't modify the room or closet to vent since I am a renter. I have seen that CO2 helps especially during flowering to increase the yields. So, two questions really, is it worth it in my situation to even consider CO2? and I had seen the exhale CO2 on Amazon that seemed easy and a practical possibility for my closet and situation, has anyone used this? Oh and third, kinda like the first part, should I save the 30 bucks or go for it? Oh, forth, should a newbie just forget what he reads about CO2 until he has more grows under his belt?
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Used it twice. Not enough results at all to use it a 3rd time. Look into a CO2 tank and a controller. There's tons of info on here and a lot of folks using it.
 
Mount

Mount

Well-Known Member
hotrodharley said:
Used it twice. Not enough results at all to use it a 3rd time. Look into a CO2 tank and a controller. There's tons of info on here and a lot of folks using it.
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Thanks hotrodharley.... I was reading about the tanks... just not in the cards right now, but glad ya have the experience with that exhale and shared...
 
bravedave

bravedave

Well-Known Member
I have a tight but not sealed room built in an unheated barn. My winter grow has me only recycling my air 4 times a day with the cold air of the barn. No CO2 enhancement. All was well. 6 plants, 3.5 months, "about a pound".
 
chuck estevez

chuck estevez

Well-Known Member
bravedave said:
I have a tight but not sealed room built in an unheated barn. My winter grow has me only recycling my air 4 times a day with the cold air of the barn. No CO2 enhancement. All was well. 6 plants, 3.5 months, "about a pound".
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2 types of rooms, sealed or not, if not sealed, air exchanges bring a constant supply of fresh c02 in. I use it in a sealed room as I live in a condo and can't have air going in and out of my place. so i sealed it up and I provide the c02 for the plants.
 
bravedave

bravedave

Well-Known Member
chuck estevez said:
2 types of rooms, sealed or not, if not sealed, air exchanges bring a constant supply of fresh c02 in. I use it in a sealed room as I live in a condo and can't have air going in and out of my place. so i sealed it up and I provide the c02 for the plants.
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Right, so like I said,tight but not sealed...
My room, were it not for a filtered exhaust and a passive intake, I think would qualify as sealed (air-tight door, all seams caulked, air-tight outlets) That said, when my exhaust is not running there really is no air exchange happening and thus no "constant supply of fresh CO2".
 
chuck estevez

chuck estevez

Well-Known Member
bravedave said:
Right, so like I said,tight but not sealed...
My room, were it not for a filtered exhaust and a passive intake, I think would qualify as sealed (air-tight door, all seams caulked, air-tight outlets) That said, when my exhaust is not running there really is no air exchange happening and thus no "constant supply of fresh CO2".
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think you're missing the point, If you are doing air exchanges(which you are) there is no need to be sealed up tight. If you are supplementing co2, the tighter the better, your co2 will last longer. not discounting your set up at all.
 
bravedave

bravedave

Well-Known Member
chuck estevez said:
think you're missing the point, If you are doing air exchanges(which you are) there is no need to be sealed up tight. If you are supplementing co2, the tighter the better, your co2 will last longer. not discounting your set up at all.
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I agree with everything you say here.

Just making the comparison for the OP as he was worried about having enough CO2 even though his closet was completely open when the lights were on. So, the simple answer was probably, "Yes. You are fine". However, I meant to show that my plants were fine with far less CO2 being added.

That said, one caveat on your statement... living in a very cold climate, if I did not seal, the exhaust would be sucking a very cold air through every crevice, doorknob, and electrical box in addition to my 6" passive (which is fronted by a heater in the winter). I thought my insulation and vapor barriers might have prevented it, but no, had to caulk and reenforce outlets etc.
 
O

Openears

Member
bravedave said:
I agree with everything you say here.

Just making the comparison for the OP as he was worried about having enough CO2 even though his closet was completely open when the lights were on. So, the simple answer was probably, "Yes. You are fine". However, I meant to show that my plants were fine with far less CO2 being added.

That said, one caveat on your statement... living in a very cold climate, if I did not seal, the exhaust would be sucking a very cold air through every crevice, doorknob, and electrical box in addition to my 6" passive (which is fronted by a heater in the winter). I thought my insulation and vapor barriers might have prevented it, but no, had to caulk and reenforce outlets etc.
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I have everything sealed in my room so I thought lol . How did you seal your outlets?
 
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