Best temp for CO2???

[bearklaw]

I was hoping someone would know the best temp for co2. Also maybe the highest and lowest you would have your temps.

thanks......

 

[Maxyeild]

85F drop to 75f at night

 

[bearklaw]

That is just what i wanted to hear. temps are rising fast in my area


Thanks Maxyeild

 

[DIGITALHIPPY]

not quite

not quite

85F drop to 75f at night

thats for days 15-50....
days 1-14 you want 73-day 73-night, reduces strech alot.(yes even with co2!)

then... 15-50 you crank it up... for myself i do 15-21 @ 78-80-day and 70-night...
then 85 solid untill 45-50
when i got back down to 70-70 try and purple things up a bit.

if your not doing 73-73 first 2 weeks they'll strech alot more and give fluffier bud.

yes im using co2.

 

[bearklaw]

Thanks Digitalhippy... I am growing purple kush for the second time so stretch is not a big deal, or at least it hasn't been. they are about 15 to 16 inches tall and almost that wide with 2 1000w and 1 600w metal halide...I plan on vegging to 3 feet...
That is good info, so i will cut and paste to note pad...From what i got out of that is, that i should go ahead and leave the temps at 85 and 75 until last 2 weeks???

 

[migs]

thats for days 15-50....
days 1-14 you want 73-day 73-night, reduces strech alot.(yes even with co2!)

then... 15-50 you crank it up... for myself i do 15-21 @ 78-80-day and 70-night...
then 85 solid untill 45-50
when i got back down to 70-70 try and purple things up a bit.

if your not doing 73-73 first 2 weeks they'll strech alot more and give fluffier bud.

yes im using co2.

Wouldn't it be useless using co2 enrichment with temps at 73. ive read that if your temps aren't higher than 80 the plant doesn't use the extra co2 your giving it.

 

[noone88]

Agree, doesn't make much sense keeping temps low first few weeks of flowering since they're still in veg mode and while in veg mode, they can utilize tons of CO2.

If anything, CO2 can be kept lower near the end of flowering cycle.

As for the OP question, it's strain-dependent. Mine floats between 83-88 light cycle. Most of my strains can handle the heat, but I had one particular strain that could not handle the heat in a CO2 environment with high temps. It stretched, grew huge fan leaves, typical heat stress results.

80-85 is what I would like, but not really practical during summer.

 

[flamingheat]

just look back at digitalhippy's successes. i'd do what he says......

 

[sparkjumper]

Yes he has good grows,but that doesnt mean he's correct at everything.I have to disagree completely having flowered with co2 for several years trying all sorts of different techniques.During the first few weeks of 12/12 the plants need light nitrogen and co2 and the more the better,that is when the most furious veg growth occurs and when the enrichment is really useful.I keep my canopy at around 85 F using a lazer thermometer.After day 45 or 50 on a 60-70 day strain I'll decrease the temps to 75-80 degrees.I find genetics to be the deciding factor on fluffyness of flowers or plant stretchEDIT A good question that I've always wondered is whether you want actual plant canopy temps or ambient temps.Since using a lazer thermometer I've realized it can be 5 degrees different easily.Normally the plants are a bit cooler than the surrounding walls especially after hydrating them.My p[lant canopy may read 85F while the wall inches away may read 90F.Its a conundrum..

 

[noone88]

Yes he has good grows,but that doesnt mean he's correct at everything.I have to disagree completely having flowered with co2 for several years trying all sorts of different techniques.During the first few weeks of 12/12 the plants need light nitrogen and co2 and the more the better,that is when the most furious veg growth occurs and when the enrichment is really useful.I keep my canopy at around 85 F using a lazer thermometer.After day 45 or 50 on a 60-70 day strain I'll decrease the temps to 75-80 degrees.I find genetics to be the deciding factor on fluffyness of flowers or plant stretchEDIT A good question that I've always wondered is whether you want actual plant canopy temps or ambient temps.Since using a lazer thermometer I've realized it can be 5 degrees different easily.Normally the plants are a bit cooler than the surrounding walls especially after hydrating them.My p[lant canopy may read 85F while the wall inches away may read 90F.Its a conundrum..

Most likely due to the insulation of the walls versus the active transpiration of the leaves/canopy.

 

[DIGITALHIPPY]

Wouldn't it be useless using co2 enrichment with temps at 73. ive read that if your temps aren't higher than 80 the plant doesn't use the extra co2 your giving it.

like i havent been doing this for the last 1/2 DECADE??

i even use co2 in veg with 70's temp. your priming the plants to accept co2, they arrange the stomas differently in a co2 atmosphere.

just look back at digitalhippy's successes. i'd do what he says......

thanks man, for a few years i thought co2 was a waste of money.

Agree, doesn't make much sense keeping temps low first few weeks of flowering since they're still in veg mode and while in veg mode, they can utilize tons of CO2.

If anything, CO2 can be kept lower near the end of flowering cycle.

As for the OP question, it's strain-dependent. Mine floats between 83-88 light cycle. Most of my strains can handle the heat, but I had one particular strain that could not handle the heat in a CO2 environment with high temps. It stretched, grew huge fan leaves, typical heat stress results.

80-85 is what I would like, but not really practical during summer.

you must be growing that fluffy crap.
plants strech ALOT on flip. first week mostly.

ive had fluffy kush from running 85 in weeks 1-2

strain makes no differance, the plant is biologicaly programed to strech less when day/night are the same/simaler.

 

[dongle69]

What happens in the first couple weeks of the flower period isn't going to make buds fluffy or not.
They are barely starting to form at that time.
noone88 is right, bump the co2 down near the end.

 

[DIGITALHIPPY]

Yes he has good grows,but that doesnt mean he's correct at everything.I have to disagree completely having flowered with co2 for several years trying all sorts of different techniques.During the first few weeks of 12/12 the plants need light nitrogen and co2 and the more the better,that is when the most furious veg growth occurs and when the enrichment is really useful.I keep my canopy at around 85 F using a lazer thermometer.After day 45 or 50 on a 60-70 day strain I'll decrease the temps to 75-80 degrees.I find genetics to be the deciding factor on fluffyness of flowers or plant stretchEDIT A good question that I've always wondered is whether you want actual plant canopy temps or ambient temps.Since using a lazer thermometer I've realized it can be 5 degrees different easily.Normally the plants are a bit cooler than the surrounding walls especially after hydrating them.My p[lant canopy may read 85F while the wall inches away may read 90F.Its a conundrum..

u bring up good points.
go by the leaf temp. thats what dictates the plants transpiration.

i have also fucked up alot, and do have an idea or 50 of 'what doesnt work'


i dont even think anyone should try to use co2 untill they can pump out consistant crops.
i sure wasted alot of money on co2 200$ a crop in a 15x18 room, just for re-fills.
most crops didnt even show yield gains even with the fancy 'sealed room'.
i simply didnt know how to enable the plants to be 'that vigorous'

just do let me know what you thought of your crop when its done.

 

[noone88]

Very strain dependent. i.e. Alaskan ice cannot handle a CO2 environment with moderate temps (80 or over). Vertical stretching through 6-7 weeks of flower, few bud sites, huge fan leaves, fox tails, all the typical signs of heat stress.

 

[Eminem]

thats for days 15-50....
days 1-14 you want 73-day 73-night, reduces strech alot.(yes even with co2!)

then... 15-50 you crank it up... for myself i do 15-21 @ 78-80-day and 70-night...
then 85 solid untill 45-50
when i got back down to 70-70 try and purple things up a bit.

if your not doing 73-73 first 2 weeks they'll strech alot more and give fluffier bud.

yes im using co2.

Day 1-14 you run 73 day and night

Day 15-21 78-80 day, and 70 night

85 solid till day 45-50? Is that day and night or just at night??