what is the highest temperature youll get away with?..
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reggaerican
Well-Known Member
i would say 32+ is all bad for your plants 35 will stop growth completly
reggaerican
Well-Known Member
wow your on of those growers that really likes to push the evelope arent you ..lol thats hot
unispanman
Well-Known Member
ive seen beasts grown at 30 - 32 anything past that is overkill imo
Dwezelitsame
Well-Known Member
im at 90 to 96 now in a tent with two 250w lights
eryting b erie
eryting b erie
NateDizity1420
Active Member
My tent has 2 400w hps bulbs in it now and w/ the exhaust fan & floor/ceiling fans it stays between 78-88 F. Before I had my fans it would get up to 95-98 F and this seemed like it was starting to make my plants wilt. I dont like letting them get over 89 F. This summer my out door crop took 2 weeks of 95 F and above weather like champs, but there were a couple that got killed off because of the extreme heat. So depending on the strain your growing your plants may be able to take high temps w/ no problems that other strains might wilt and die in. If I was you id try and keep your heat down around 85F at the highest.
Nullis
Moderator
Anything above 30 Celsius/86 Fahrenheit should be avoided. Such high temperatures result in stretchy plants with smaller, airy buds.
Some strains will handle high temperatures better than others. What must be understood is that high temperatures in an indoor grow room are more potentially devastating to the plants growing within it, as opposed to plants growing outside in a hot environment. Outside the temperatures fluctuate depending on the position of the sun in the sky, and local whether patterns. There is also constant airflow to plants which are grown in an open atmosphere.
Indoors, carbon dioxide is quickly depleted from the air and it is just stagnant. If you want to grow in temperature exceeding 90 degrees, carbon dioxide enrichment becomes a necessity.
Some strains will handle high temperatures better than others. What must be understood is that high temperatures in an indoor grow room are more potentially devastating to the plants growing within it, as opposed to plants growing outside in a hot environment. Outside the temperatures fluctuate depending on the position of the sun in the sky, and local whether patterns. There is also constant airflow to plants which are grown in an open atmosphere.
Indoors, carbon dioxide is quickly depleted from the air and it is just stagnant. If you want to grow in temperature exceeding 90 degrees, carbon dioxide enrichment becomes a necessity.
ThatsWhatSheSaid
Member
Damn, I thought 82 was high, someone said that's the temp mold likes so I try to keep it below that
diamonddave
Active Member
thr highest my temp in my tent gets in 89F, but thats with plently of air circulation and it doesnt seem too hot under the 250... so is it ok to have these high temps if there is a fan blowing in between the light and the canopy?
TaoWolf
Active Member
Should be fine even if not optimal. Just for perspective, I've had plants make it through long periods of 100+ degree heat outdoors with temps being in the upper 90s most of the summer. They did seem to slow down at those temps, but it didn't kill them. Although, sativa dominant strains are going to do better than indica dominant strains at higher temperatures, so your mileage may vary.
Dwezelitsame
Well-Known Member
just keep good air circulation
i read a piece by hobbs about his air floor so now i have a tower oscelating and a fan on floor bowing air to bottom of my leaves for stomas i liked the approach of the hobbs experiment
both vents in tent are open so even with my adv temp over 90 plants do fine
top view of tent drawing easyer to understand then pic
one of reasons im so hot cause of enternal ballast on one light my first light still keep for now to go one day use for veg setup and get replacment for flower
i read a piece by hobbs about his air floor so now i have a tower oscelating and a fan on floor bowing air to bottom of my leaves for stomas i liked the approach of the hobbs experiment
both vents in tent are open so even with my adv temp over 90 plants do fine
top view of tent drawing easyer to understand then pic
one of reasons im so hot cause of enternal ballast on one light my first light still keep for now to go one day use for veg setup and get replacment for flower
homebrewer
Well-Known Member
I'm going to disagree here. Hot days in my grow room get up to 32C/90F and my buds aren't airy. I'm not even sure that stretching is even relevant in this case as in the winter, my plants are structurally the same as they are in the summer where I sometimes see high temps. As always, there are a variety of factors and YMMV.
I do agree that 30/86 is high enough but going hotter isn't so detrimental that it is to be avoided at all costs.
diamonddave
Active Member
i def agree with u homebrewer, i mean guys lets get real, the outdoors gets wayyy hotter than 86, and yes i know that the airflow and breeze in endless but still, even in a hot growroom, as long as there is plenty of circulation and a breeze for the ladies, growth should not stop nor be halted.
Sweet, nice one for the replies guys, good info there...
How much does humidity affect plants, as i recently bought a tiny fogger, cos my humidity was never above 25% wich i understand is far too dry, but the fogger doesnt do a great deal, it pushes the humidity up to 47-50% at best. I wanted it to go to 80% for the veg stage. How important is this, or should i just take the fogger back for a refund and not worry about humidity being too dry???
How much does humidity affect plants, as i recently bought a tiny fogger, cos my humidity was never above 25% wich i understand is far too dry, but the fogger doesnt do a great deal, it pushes the humidity up to 47-50% at best. I wanted it to go to 80% for the veg stage. How important is this, or should i just take the fogger back for a refund and not worry about humidity being too dry???
mashroom777777
Active Member
it's not the same thing indoors and outdoors,outdoors temperatures rises over 30c just for a few hours,also ventilation is much better outdoors but indoors, high temperatures last for 18hrs at least thus damaging the plant.i had 3 easy ryders in a grow room while summer,with temperatures of 38c,sometimes even 40c for 18hrs a day and the plants got shitty without a lot of thc,tasteless and not potent at all.i'm quite sure high temperatures affects badly the quality of the final product.
mashroom777777
Active Member
my friend indoors the temp is over 30c for at least 18hrs (which is too long)but outdoors only for 5-6 hrs(noon time) ,take this also into consideration.. so it couldn't possible be the same thing(indoors and outdoors)