CO2 for how long?
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budleydoright
Well-Known Member
I have run at 1500 all the way through and dropped to 4-500 during the last couple of weeks. Couldn't tell you if there's a difference or not. I have yet to find any published research on this myself. My gut tells me it's incorrect. Your plants produce material from the carbon they get from the air, and your plants bulk up during the last 2 weeks. Logic would dictate that a consistant level through out is the best. the argument that the Co2 displaces other gasses in the ripening process doesn't hold up, as 1500ppm is still a very small percentage of the makeup of the air that surrounds a plant.
I'm no expert and do not assert that this is correct, this is just my own experience and personal findings after asking myself the same question. My next round will go gas all the way through.
I should add that I have been having better success running at 1000-1200 ppm and 78-80 degrees. If I try to go hotter, things seem to get out of control too fast. Temp swings, humidity spikes. Things run better for me at less than 85.
I'm no expert and do not assert that this is correct, this is just my own experience and personal findings after asking myself the same question. My next round will go gas all the way through.
I should add that I have been having better success running at 1000-1200 ppm and 78-80 degrees. If I try to go hotter, things seem to get out of control too fast. Temp swings, humidity spikes. Things run better for me at less than 85.
Thx Joe and Budley. I run ghetto gas after reading a thread called Myth busters, the real truth about DIY co2...and I thought it was just me, but I thought I noticed the ripening issue too. Next problem is humidity, I'm trying to avoid adding a dehumidifier due to the added electricity, already running 4 x 4 (1000 watt bulbs) flipflop plus AC plus fans...and worry about the electric company noticing.
Kaptain Kron
Well-Known Member
I've heard words that your supposed to match your ppm in your resivoir to your ppm of co2 this is a general rule that is helpful for makin sure you dont have too much or too little co2 its not meant to be a perfect equation every time but its a good jump off point.
Kaptain Kron
Well-Known Member
cannawizard
Well-Known Member
*kron.. you cant feed your plants sticky farts... sigh... nice try
oHsiN666
Well-Known Member
i wouldn't give much concern to the electric bill if i were you. i have the same set up, plus i run a clone/mother/veg room. have a portable a/c unit and my ac has spiked, but i live somewhere with extreme heat in the summer. plus, when i was younger we used to trip about a high electric bill, but come to think about it, have you ever heard of a company saying "Hey, we do not want your money, go ahead and save as much as electric as you want." FUCK NO!!! they WANT you to USE the electric. they love it when you have a high bill. do you think they will come to you and ever ask why your using so much electric? the spike is not high enough. plus you can always tell them they you run a few portable a/c units in the summer. there is tons of reasons for having a high electric bill. its really nothing to be overly concerned about. especially in the summer time. but then again, if you have been living in your place for years and years, and all of a sudden it goes up like $500, then you may have reason to be concerned. but with all the gadgets and technology there is these days, its really hard to pinpoint what people do with there electric these days. you also have to think about dishwashers, washing machines, ovens, t.v.'s, all kinds of shit turned on going at once will give you a big bill. and you have kids, forget about it, that right there is a good enough reason. have fun and good luck!!!
cannawizard
Well-Known Member
*ive looked into this.. and for personal experience, only hybrids (and sat doms) are affected (some, theres so many strains, not enough data/info).. maybe thats what s1 meant when they stated that.. who knows... c02 helps... why would you cut it off!? ...uumm hence, photosynthesis 101I've heard that its beneficial to stop co2 supplementation about 2 weeks from harvest. Anyone have any comments on that?
If this is the case, how do you do that if you're growing in a CGE? Is there a minimum level of co2 saturation during the last 2 weeks?
Peace
POTF
budleydoright
Well-Known Member
Seems to me when your CEA, and giving everything a bump above the norm. Cutting anything off completely is asking for trouble.
I tried doing a flush for the last week and my plants looked like shit compared to a balanced feeding regemine all the way to the end. Why would Co2 be any different. Still looking for any published research on this one.
I tried doing a flush for the last week and my plants looked like shit compared to a balanced feeding regemine all the way to the end. Why would Co2 be any different. Still looking for any published research on this one.
cannawizard
Well-Known Member
*goodluck finding a credible source.. im still searching
..cheers
Joedank
Well-Known Member
All I got to go on is what stoners and growers say about flavor my plants that get 1500 to the end have very little flavor... Compared to the same strain in the greenhouse.... That is why I go 1000 ppm till the end yeild+flavor=winning
My deadband is 200ppm so it fluxes from 800-1000ppm
My deadband is 200ppm so it fluxes from 800-1000ppm
I hear what you're saying and it helped me sleep a little better last night lol. I've always thought to myself its not illegal to purchase electricity... The problem is i can't deny reading stories in local papers about busts due to high energy usage. They don't write about exactly how much usage though. I've also read about electricity companies using computer programs to monitor for patterns of use common in the grow community, 12/12, 18/6 and so on.
legallyflying
Well-Known Member
I have also tried full run and cut off at th end. I've actually found that quantity is better running 85 and 1500ppm all the way theough. However,quality is better with reduced temps ..around 75 and around 1200. I say 1200 b/c they can't really utilize 1500 ppm at the lower temps.
High temps, and high co2 just makes for a fluffier bud in my experience
High temps, and high co2 just makes for a fluffier bud in my experience
cannawizard
Well-Known Member
**theres sweet spot in the middle.. no flux temps in the 70s.. if the stomas are up, then c02 will be utilized
--imo 'quality' falls heavy on genes..
legallyflying
Well-Known Member
To some extent. Grow jack herrer at 85 degrees and watch it get fluff tacular.
cannawizard
Well-Known Member
*i blame the breeders for selecting those genes
*cough
Matt Rize
Hashmaster
for sure, CO2 levels should mirror growth. plant growth slows greatly in the end as the plant is mostly making THC from its precursors and is done gaining mass. i run around 500 for the last couple weeks to save CO2. you have to supplement some, as the plants still are living and will use available CO2 in a sealed roomI've heard that its beneficial to stop co2 supplementation about 2 weeks from harvest. Anyone have any comments on that?
If this is the case, how do you do that if you're growing in a CGE? Is there a minimum level of co2 saturation during the last 2 weeks?
Peace
POTF