room temps

[Jake Blues]

i`ve got some ??`s on room temps.my grow is in a tempoary spot,so i can vent the heat out all i can do is open the door for the most of the light cycle.but about 4-6 hours the door has to be closed.
with the door open the temp stays about 73f and 40%hum.with the door closed the temp is 88f and 30% hum..
i`m in veg and when i go to flower the door can stay open when the lights are on.
will the high temp hurt anything while i`m in veg(3 weeks more)?
i`ve just never had temp problems so i`m just not sure of what can problems it can cause.

jake

[hydrorascal]

88 is gonna cause you problems.. hydro or soil... the moisture will evaporate too fast for the plants to get much from it....
73 is sure a nice temp to grow in....

an open door grow ?? ouch !!!! thats a recipe for disaster.... new locks on the door with those locks being used all the time is sure much much better...imo

[meloyelo]

Sats can tolerate it more, Indicas less. They will likely get pretty droopy and pretty abused looking. If you have liquid kelp extract 1/4 tsp / gal water foliar feed will help perk them back up when you can open the door. I wouldn't spray more than once per week though.
Other than that just more fresh air.
-melo

[Alaska]

I understand the temp thing, but if you have a little know how, you can rig up a vent pretty easily.

How big is the room/closet, and would you consider painting it when finished. If you would paint when done, you can easily make a hole in the drywall of the ceiling or walls and exhause into the attic or the next room. If the room has a window, you can rig up a window fan on intake so it doesn't stink outside, and that would help push the hot air out.

Drywall is really easy to repair.

All you need to do to fix your hole is be very careful when you make it. IF you use a box knife, and only make one cut per clean blade side, you should be able to make your cutout come out in one piece. If you can't get it outy in one peice, drywall is only about $8-12 per sheet, and usually if you look around, you can get a broken 1/2 sheet for $2 or $3.

to repair when you are done, Stuff some newspapaer in the hole, all bunched up, and then lay the removed drywall piece back in the hole, as level and even as possible. Then take all purpose joint compound, and fill the cuts around the piece, making sure you get back into the crack/cut very well. Use a mudd knife make it as smooth as possible, let dry for a good 24 or 36 hours, and sand off the remaining mudd thats sticking up, but don't sand the paper coving the sheetrock, as it will make the paint look crappy. After sanding, wipe down with a damp towel, let dry, and paint. Viola, ventilation and happy plants

Any questions don't hesitate to ask

A

[Jake Blues]

alaska i wish it was that simple but!they have a very wierd texture on the walls and roof,it not your normal blowon or texture.but as i said this only has to be for this gow i hope.
my solution is to run 3 125 cfl`s during that time i have to have the door closed.it`s a small grow(14 plant sog) and i only have to run them for a few hours a day during veg,so i shouldn`t lose to much.
but thanks for the help ya`ll.

[Elohim is plural]

...hydrorascal's right...but if you're stuck with an imperfect room...give 'em pottasium silicate...it will help weather out the heat...
EIP

[markscastle]

Also add Co2 and they will weather the heat better.You will have to work harder though as they will need much more nutes,water and will bush out and grow like mad.Lots of work. The problem is going to be in flower.They need to be cooler and have less humidity or mold maybe a problem and they may not form buds as well.co2 will help here as well, but won`t make up for the heat altogether.can you get a portable airconditioner with a vent line on it to a window? If so watch out also for light leeks.

[Old Toby]

88 isn't a temp problem, 98 is. Too damn many people from cool climates saying that over 75 is a problem. I say bullshit. 70-90 works great. Warmer means more water. Also plants can withstand the 90f easily so long as the humidity is over 45%. Your RH drops as the temps climb. Adding a humifier or an elevated pot of water will add moisture to the air, giving the plants a chance of not "loosing their breath"

Having grown outdoors with summer times daily over 100f, and indoors with peaks at 95f, I'm sure you won't kill the plants. The worst effect is that the buds are less dense and the plants don't want to "finish". Look at the edges on the fan leaves. If the "serrated blade" tips are twisted and curled upwards, your plants are feeling the effects of the heat. If not, DON'T PANIC

Tobold Hornblower

[c-ray]

depends on the strain too...some sativa dom strains thrive at around 90

also how cool are your roots are in relation to room temps, if they are cool then no probs but if they are also higher then they should be well that's a problem

[Old Toby]

outdoors there is a balance of organisms that keep everything happy while the soil temps climb in the summer. Bubblers need chillers, but e/f doesn't really seem to have much effect on the rez temp. Sativas NEED the heat to finish the flowering cycle. Indicas love it hot and sweaty...untill the buds set..then they really need drier weather due to the density/mold relationship. Vegging, as the original poster was asking about, seems to go faster with temps 80-90 compared to 70-80. no proof on that, just experience.

Tobold Hornblower

[LordOvertoke]

Toby & OS....are y'all both using E&F?

LO

[grasshopper]

fwiw

[Jake Blues]

well after many bowls and a lot of thought,it just came to me that the door has a large gap at the bottom with some cardboard and duct tape i was able to mock up a int/ext to hook to the fan and it worked out to 78f with the door closed so i think that should do the trick no wilting and the plants seem to be very happy so far.if you can`t fix it with duct tape it just can`t be fixed.lol

[Midwest]

I use two timers to control the heat in my cabinet

One is hooked up to my main hid light and another is connected to some cfls.

The hid is set to turn off twice a day for a half hour while the cfls stay on all the time. My temps will usually drop about 5 or 6 degrees during the hid's half hour break. And it will take about 2 hours before they climb back up to full tempeture.

[CannyBus]

Yes, Specific Strains and Medium do effect overall health of the plants, Sativa's more tolerant of Higher temps, you can extend water retention by using products like Coco Coir, Venting is ALWAYS a good idea, not only for heat stress, but also the gentle breeze will rock the plants and strenghten the Meristem (Main Stalk) one very good suggestion i can give, is to research where the plant is native to, growing afghani strains, what is the growing season like there? if Domestically produced seeds, try and contact the maker, and find out THEIR conditions, as they will have adapted to a degree.
of course when you grow several strains in the same environment, you have to generalize to suit all.

[Joe King Park]

also remember plants use more Nitrogen when exposed to High temperatures
Joe

[Joe King Park]

yes , simply switching to nightime use will hopefully cure your problem
along with 20-30 room air changes per hour
summers only going to get hotter
Joe

[Alaska]

Glad to see you've got a solution in the works

A

[Papi]

Okeedokee, so whats the verdict folks ? Will temps of 82-83-84 degrees ruin things ? Circulation and air replacement are excellent. Ebb & Flow.

[plantbuilder]

sounds ducky papi.
peace.
pb

[Green Supreme]

Papi while those temps are not optimal they are accepptable.Peace GS

[Brick Top]

Okeedokee, so whats the verdict folks ? Will temps of 82-83-84 degrees ruin things ? Circulation and air replacement are excellent. Ebb & Flow.



Depending on what strain you are growing you should be fine at those temps, in my opinion anyway. Look at the temps and humidity levels some strains grow in in nature and then tell me you need 70 degrees to grow herb.

If you have a sativa running or a sativa dominant don’t worry about the temps you have you’ll be fine. If you’re running a pure indica or mostly indica it might be a few degrees warmer than optimal but still within an acceptable range.

[Papi]

Donkey shins mi amigos !