Need Help with Lowering Grow Room Temperature

whitewidow2

whitewidow2

Well-Known Member
I watered my plants this morning and cracked the window open again (its damn cold outside today...) left it for an hour or so and then checked temps again and i got a 75F

I have another issue though... - my hps is way too far above the plants and its on easy roll hangers yet when i try to move it down closer to the plants the damn thing just wants to creep back up - anyone had this problem before and how did you solve it?
 
doitinthewoods

doitinthewoods

Well-Known Member
sedate said:
What? Are you talking about?

This is moronic bitchiness at best -

Growing indoors is an attempt to provide a perfect natural environment. So while the outside might have sun, breeze, air, and rain - indoors has an HPS bulb, a fan, and a guy with a watering can. So I have no idea what in the world your point is.

The idea that the plant will react to higher temperatures in one environment while NOT reacting to them in one that provides all the same "elements" is obviously wrong.

Now,



This is also wrong. He's already well invested in ventilation, and if you bothered to read the entire thread other than the part you thought you could smarmly disagree with, you'd see that not only do his plants look excellent, but he's moving plenty of air. Beating a plant to death with wind is a good way to damage it. Brief temperature spikes to 90F might slow down rapid growth a bit for some strains, but it won't cause any permanent problems.

So, as I said, if he really feels this is a critical concern - which I don't think it is but some ppl are nuts about their plants - then he needs outside ventilation - even if it is just ventilation to the rest of his residence.

Lastly, the OP's concern is detection, and temperature spikes are better than prison.
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wow, you got pretty butthurt didn't you. I'm still right. Sorry.
 
greenyield

greenyield

Well-Known Member
whitewidow2 said:
I have another issue though... - my hps is way too far above the plants and its on easy roll hangers yet when i try to move it down closer to the plants the damn thing just wants to creep back up - anyone had this problem before and how did you solve it?
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you can hang your lights with plastic coated garden wire, you can raise them up by twisting the wire, see picture.

if you have heavy lights you can just twist 2 lengths of this wire together to make it super strong.
 

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tom__420

tom__420

Well-Known Member
greenyield said:
you can hang your lights with plastic coated garden wire, you can raise them up by twisting the wire, see picture.

if you have heavy lights you can just twist 2 lengths of this wire together to make it super strong.
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I wouldn't trust that shit for a second you are setting your plants up for a disaster man
Just get some chain and S hooks, they will SECURELY hold your light up
 
greenyield

greenyield

Well-Known Member
tom__420 said:
I wouldn't trust that shit for a second you are setting your plants up for a disaster man
Just get some chain and S hooks, they will SECURELY hold your light up
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ive used wire for years bro, i had chains but they are fiddly
and the wire is easier to adjust, for me at least.
hell man, ive had the same type of wire holding a carbon filter to the ceiling without any problems.
 
talon90

talon90

Active Member
Well i have no contest on the fact that they grow just as good in 90s and will not cause any damage was just a idea
 
whitewidow2

whitewidow2

Well-Known Member
update... temps today are about 80-90F and humidity is about 40%

should i be concerned about these readings?

whats the best way to get the humidity back up to about 50%
 
doitinthewoods

doitinthewoods

Well-Known Member
whitewidow2 said:
update... temps today are about 80-90F and humidity is about 40%

should i be concerned about these readings?

whats the best way to get the humidity back up to about 50%
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relatively speakng, 80-90 is a wide range. If it's 80 to 82 I wouldn't get too worried. If it's 85 or above, then you should be a little worried. 40% humidity isn't bad, but you could get humidifier in the room, and that should fix it. If you have a hot plate you could boil some water in the room and let the steam build up a little bit. If you have a fan control I would turn it up, if not, you can raise your lights a little.
 
tom__420

tom__420

Well-Known Member
doitinthewoods said:
relatively speakng, 80-90 is a wide range. If it's 80 to 82 I wouldn't get too worried. If it's 85 or above, then you should be a little worried. 40% humidity isn't bad, but you could get humidifier in the room, and that should fix it. If you have a hot plate you could boil some water in the room and let the steam build up a little bit. If you have a fan control I would turn it up, if not, you can raise your lights a little.
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The threads title is "need help lowering grow room temperature"
And you proceed to tell him to add a hot plate and boil some water in there?
boiling water is 212°F, don't you think that would greatly increase heat in the room? :roll:
 
doitinthewoods

doitinthewoods

Well-Known Member
tom__420 said:
The threads title is "need help lowering grow room temperature"
And you proceed to tell him to add a hot plate and boil some water in there?
boiling water is 212°F, don't you think that would greatly increase heat in the room? :roll:
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Not really, if he only does it for a few minutes. If he gets the temp under control, it's only going to cause a fluctuation for a small period of time. It may, but I doubt it.

I also gave him another option that doesn't change the temp at all.
 
whitewidow2

whitewidow2

Well-Known Member
It seems to be about 90F and when i open the door it drops down to about 80F... i guess i just got a reading of 75F the other day as i had a window open and it was very cold outside that day.

Im just wondering if upgrading my extraction fan will make a difference, kinda running things on a tight budget as well at the moment... that steam idea sounds good and inexpensive tho, should i maybe just place a mug of boiling water in with it for a little while - ive heard with humidifiers and dehumidifiers you can dial in the required humidity - whats the difference do i need a humidifier or dehumidifier?
 
whitewidow2

whitewidow2

Well-Known Member
tom__420 said:
The threads title is "need help lowering grow room temperature"
And you proceed to tell him to add a hot plate and boil some water in there?
boiling water is 212°F, don't you think that would greatly increase heat in the room? :roll:
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lol good point
 
tom__420

tom__420

Well-Known Member
Dehumidifier is for lowering humidity
Humidifier is for raising humidity
A stronger exhaust fan will def get your temps better
I was using an air cooled 250 watt with a 120 CFM inline duct fan and things we hot as hell, upgraded to a 306 CFM fan and temps were perfect
 
whitewidow2

whitewidow2

Well-Known Member
thanks tom

my extraction fan doesnt seem as tho it pulls much air through that carbon filter - it just feels a little cold round the edges of it when its on inside the cupboard. Ive been looking at fans but most of them give their cfm value in m3/hr - can you tell me what size of fan i would need in m3/hr?
 
tom__420

tom__420

Well-Known Member
I would get one that is between 500 and 600 m3/h
What is the fan you have now rated?
When there is a carbon filter attached to the inline fan the power of the fan will be decreased a little bit
 
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