are some strains overly sensitive to co2?

desertrat

desertrat

Well-Known Member
has anyone heard of or experienced severe wilting when exposed to co2 at 1,000 ppm? it's definitely the co2 as i have gone back and forth three times with co2 and gotten the same results. and my co2 meter has been calibrated, is at plant level and is not having problems.

strain is some mystery seed from the seed bank.
 

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2000tranzam

Well-Known Member
Maybe the plant wasnt big enough to endure that many ppm's at that stage in its life? Im not too sure but Id like to know too.
 
sensisensai

sensisensai

Well-Known Member
That's odd. Tho a friend had a pineapple express pheno that was just a no-go too. Only 1 peno but he had 3 of the pheno. They saw 1500 ppm and practically self-destructed but he was a noob so I wrote it off as a picky strain and noob mistakes (which it very well could be, c02 was all he claims to have changed tho)
 
purrrrple

purrrrple

Well-Known Member
ive seen plants do "the claw".. looked like they were overwatered... your plants look like they are dry and wilted tho. do they need some water?
 
sixstring2112

sixstring2112

Well-Known Member
scrapdizle said:
turn it down to about 400 or so.. way to high for those lil things.
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i dont know about that, i run mine at 1500 ppm for all my plants. i run it for the flowering ones but all the clones and vegging plants are in there soaking it up,must be that plant.
 
CLOSETGROWTH

CLOSETGROWTH

Well-Known Member
I also run my flowering ladies at 1500 ppm.. no problems..

I find this interesting, and will look into it..

Thanks for the report... Im trippin'.
 
RedHairs

RedHairs

Active Member
Damn. Never seen anything like that in my life. That shit just clobbered those babies. Only CO2?
 
RedHairs

RedHairs

Active Member
CLOSETGROWTH said:
Weird huh?

Although, Ive read somewhere that excess co2 may turn your plants a very dark green.
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Yes, I've also read that CO2 can become toxic to plants at too high a level. 1500 ppm is high... but I wouldn't go off and say it's toxic. :?

I'm curious if the co2 is blowing directly on them, and where is the co2 coming from? Generator, tank, etc? If tank, I would begin to wonder if any other gas was stored in there prior to the co2 refill that may be harmfull to the plant.

It's reaching, yes; but I don't know what else to think really. Maybe it would like less co2. :confused:
 
desertrat

desertrat

Well-Known Member
i'm going to play around with the co2 again this week. let's see if they still have problems. pics to come.
 
desertrat

desertrat

Well-Known Member
these are up to date pics of the mystery seed females that reacted badly to co2, before turning the co2 back on again:View attachment 941094

and these are five unsexed carmelicious plants just added to flowering room with co2: IMG_0015.jpg

i moved the co2 generator up five feet to stop any possibly high local pockets of co2. and i lowered the target co2 to 1,000 ppm instead of 1,200 ppm since the room always overshoots the target level before settling.

i'll post again with results.
 
S

Suncoast420

Member
I always find that at the introduction of co2 into the environment the plants will wilt for a day or so. Once they get used to it they should stand right up and the leaves should be very erect since they absorb the co2 from underneath the leaves. My regulator is set for 1400ppm and they always wilt on the first day of co2.
 
sixstring2112

sixstring2112

Well-Known Member
RedHairs said:
Yes, I've also read that CO2 can become toxic to plants at too high a level. 1500 ppm is high... but I wouldn't go off and say it's toxic. :?

I'm curious if the co2 is blowing directly on them, and where is the co2 coming from? Generator, tank, etc? If tank, I would begin to wonder if any other gas was stored in there prior to the co2 refill that may be harmfull to the plant.

It's reaching, yes; but I don't know what else to think really. Maybe it would like less co2. :confused:
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1500ppm is ideal not high. average earth air = 300-380ppm (depends on the city) add 1200ppm= perfect. although those plants look too small to be giving it to, maybe your co2 generator is to close to the plants. at 2500-300 ppm it will kill them and probably you as well. use a fan to mix it in the room, a good fan that makes wind.
 
desertrat

desertrat

Well-Known Member
Suncoast420 said:
I always find that at the introduction of co2 into the environment the plants will wilt for a day or so. Once they get used to it they should stand right up and the leaves should be very erect since they absorb the co2 from underneath the leaves. My regulator is set for 1400ppm and they always wilt on the first day of co2.
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thanks, i'll give it a little time. welcome to riu and i'll get you started with plus rep.

sixstring2112 said:
1500ppm is ideal not high. average earth air = 300-380ppm (depends on the city) add 1200ppm= perfect. although those plants look too small to be giving it to, maybe your co2 generator is to close to the plants. at 2500-300 ppm it will kill them and probably you as well. use a fan to mix it in the room, a good fan that makes wind.
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moved the generator and improved ventilation before i tried this time. pics when room lights up.
 
R2F

R2F

Active Member
Make sure you have a fan that regularly hits the co2 dispersal point because CO2 natually goes DOWN to earth, meaning if you have poor circulation at co2 dispersal point of the room, the concentration will be WAY higher than what you set it at.

The rooms I set up have the CO2 about 2-3 feet above the tops of the plants with 2-3 fans that keep the CO2 evenly dispersed.
 
desertrat

desertrat

Well-Known Member
here's the before co2 shot from yesterday:IMG_0012.jpg

same plants in far row - see how they look after 12 hours of co2 (1000pm - 1500ppm, temps 85f to 93f):

IMG_0016.jpg

going to give them another day to recover, as suncoast suggested.
 
desertrat

desertrat

Well-Known Member
R2F said:
Make sure you have a fan that regularly hits the co2 dispersal point because CO2 natually goes DOWN to earth, meaning if you have poor circulation at co2 dispersal point of the room, the concentration will be WAY higher than what you set it at.

The rooms I set up have the CO2 about 2-3 feet above the tops of the plants with 2-3 fans that keep the CO2 evenly dispersed.
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thanks. i have the monitor set at plant height and it never gets above 1500 ppm, so its not a local concentration problem. the generator is five feet above the plants and a fan keeps the co2 from settling in one place. let's see what things look like tomorrow.
 
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