How to combat the heat when growing indoors?

[Sunzi]

It takes money to make money.

Buy once, cry once. Buy the best, do it right, and you will only cry about the price once. You will spend less money over the long run than you would if you go cheap and have to lose time and money fixing problems caused by going cheap and eventually buying the quality.

Sooooooooooo true... realizing about this... unfortunatedly I started the thing on a budget, but now I can spend more... and I know I'm gonna spend it anyways, because I'm deep in this already... and most importantly, I'm not gonna stop until I achieve my goals!!!

My goals:

1- Recover the investment
2- Recover big part of the money spent on the black market during years (this probably will take me a few lives only)
3- Smoke what I want, quality and for free
4- Save money

Maybe one day...

 

[Sunzi]

Ok guys, so let's say I get an A/C device... ¿what kind/model? ¿where do I put it? ¿how does it work exactly?

 

[Asche]

the key point with any air condition is a hole where you can blast the warm air out
without that it makes no sense, there are set ups which deliver a sort of jacket
for the window, so that you can tilt it and blast hot air tightly out of the window
without ingesting warmth from out side.

or you blast it into another room where it gets dispersed through airing
or however you keep your air moving there.

it will suck in the cool air and will not heat your room up more.

but just to bring this topic up additionally, Sativas may want to have it warm
otherwise they may not blossom properly either.

for the most hybrids a little cooler is probably better.

 

[Fields~of~Green]

Are you growing for Percy only? Or bit of cash too

Give me more details

Setup tent size location of tent etc

I will help but need all info

 

[SPG*]

Aww.. seriously guys? A/C is so expensive... I don't think it's worthy for the 2 summers that I'm gonna be in here... honestly...
Also, upgrade the extractor and filter already? I just bought them a few months ago!! I thought 5" was enough for a 600W and a 1,2 x 1,2 x 2 tent...
So CO2 does nothing then? SPG* you told me it was the shit!!
I do nothing but spending, spending...

What!? CO2 aids Growth.Fact
in your case i feel less is more sunzi so turn off and get a reputable book if i were you
i was growing 7+yrs easy before id ever consider the "offerings" of weed forum sites

"one constant source of information is usually a good thing"

 

[OakyJoe]

its more about where to get cold new air when its hot outside. only change the in air with the out air isnt the only thing.

 

[jaded1]

Sunzi,you could always just switch to led's for the summer,at least then you wouldn't have the extra cost of running the a/c

 

[willyweed]

So we have:

Proper ventilation/extraction
CO2 bags
Grow at night / Sleep on daytime
Air cooled lights (cooltube?)


Any more?

air coming in is quite important ,if you have any! .ww
also grow at night after 10-11 pm .growing in the summer sucks big time without air con,from what i have read .portable ac sucks as well ! too much heat coming out of the units.
cheapest short term solution would be an air colled reflector ,plus the additional fan and filter needed .total cost about £150 .in the grand scheme of things ,this is not too much extra for top draw weed !

 

[SPG*]

Yes Air cooled or LEDs and heat problems would be a thing of the past luv
But I'm sure ya could manage with what ya got!

Ah haar! Just remembered Im using this when things get too hot uses 65w(!)and is powerfull enough to completely circulate cool air around all the plants.Reduces temps by 3-4 Celcius,think
I operate it right there blowing through the door left ajar*

2nd plant is the Tahoe Og (S1) grew more horizontally!

*More ajar than that! Door is permanently open because of the Chiller Tubing

 

[Hundred Gram Oz]

Just get a bigger filter, we are all going through this problem at the minute. My 4x8' tent was hitting 95F a few days ago, I upgraded the extraction to a 10" & 5" with a 200mm intake and now I'm sitting at 78F Handle it.

HGO

 

[moodster]

yes HGO I agree I went from a 4 inch fan and filter to a 6 inch with air cooled hood now my temps are 77 a 4 inch is not very good for a 600w bulb ! also co2 does work if you get your temps in check !

 

[SativaBreather]

there is also a product called LIQUID ICE by EVOPONICS that allows plants to thrive in high temps.
It is good, they also got LIQUID HEAT for cold temps.

In addition to helping cope with adverse temps they are both also very good tonics, keeps the plants happy with trace elememts, aminos, auxins and gibbs etc

 

[mowood3479]

major air extraction.... for your tent id say an 8" can/fan extracting w/ ur 5" as an intake.
or u could buy a portable ac move it into ur tent.. plug it in n run the vent out (and into a scrubbed area) because it will smell.
it all costs $.. but ull make it back if u r diligent.
where i live in the mountains... nightime ambient temps are never above 80 F... so I can get away with lots of air exchange and no AC n keep temps at or below 80 F.. if nightime ambient air temps are regularly more than 80F (not sure what that is in c) then I would for sure go the AC route. a small portable ac... i bought one @ home depot last year that cools my bedroom 12'x20' no problem... i think it was $250 usd.
my two cents

 

[Jhhnn]

I recently upgraded to a two stage ventilation system similar to that described in the ventilation 101 thread. There are 2 separate airflow circuits.

The primary circuit is just for the light- Outside air> fan> enclosed reflector> outdoor exhaust. I also insulated the metal part of the reflector. Putting the fan first means that any air leaks go into the enclosure, eliminating the need for a carbon scrubber on that circuit. With no scrubber, airflow & cooling are greatly enhanced. As the author of that thread says, airflow of .3 cu.ft/min per watt of light keeps the vast majority of heat out of the growing area.

The secondary circuit is for the plants. Outside air> light baffle> enclosure> scrubber> fan> exhaust. The single joint between the fan & scrubber enhances odor control. Airflow is much lower than in the primary circuit requiring a smaller fan. It also promotes long life for the scrubber.

As has been said, if air is being pumped out of the building or room then air must be able to come into the building or room if the extraction system is to work well at all.

Running heat resistant strains is clearly a good idea as well. After some very hot weather last summer & a not so effective ventilation system at the time, I can say that Mandala's Satori & Rishi Kush are very heat resistant.

 

[Sunzi]

Thanks guys! Too many responses to go one by one... I'm getting all your points though.

I will try to respond to the main points and let you guys know what I have on mind:

I really want to try to avoid to get an A/C device, because of the cost and because my instinct tells me that it's not the best solution in my case. So I might go for the extractor/filter upgrade, like others suggested.

Also, as FOG requested (and for everyone to keep in mind), some information about my setting:

Growing for both purposes but mainly for my own
1,2 x 1,2 x 2 tent (in my bedroom, a big one)
250W MH / 600W HPS
5" extractor TT Dual always at max speed - 280 M³/h
5" carbon filter
Strains choosen for this summer grow (got the seeds already):
Northern Lights x BB
Master Kush
C99

3L pots for veg
7L white pots for flowering
16" oscillating fan for moving the air inside
Cool mist humidifier

What I'm thinking is; considering there's "big" solutions (A/C, extraction/ventilation upgrade, Cool tube, etc) and "small" solutions (Silica additive, vermiculite, extra fans, liquid ice, tonics, etc) to say it somehow... why not trying a combination of all (or several) of the small solutions, for example:

Vermiculite in the soil + Silica/Liquid ice in the water + extra 16" fan pointing straight to the lamp

Maybe I can deal just with that? Or again I'm just thinking in a cheap/wrong way and should go for the big thing?

Feel free to slap my face as many times as required guys.

Thanks again

 

[Dank Demon]

In my 1.2 budbox when I used tents I ran a Etaline 8" fan for out take and a 6" fan for use on a Magnum XXL aircooled shade with a 6" Rhino CF on the end. For intake I ran a 6" TD Silent and had the 6" intake and the 8" out take on a SMS Twin Fan controller. I could run a 1000 watt bulb with that set up no probs but I fed the intake from the coolest side of the house the sun did not shine on If noise is a problem then you can use 2 x 6" TD Silent fans and a 8" TD silent. I found with the Etaline they are great fans and shift a lot of air but the external air noise whooshing out can be a problem so combated it by using 8" silencer.

 

[SativaBreather]

isomax are good too
BUT in august HYPERFANS will be available across the country
1 or 2 places have em now, but everywhere will have em in august
THEY ARE THE SHIT!!!!!!!

check em out for yaselves people https://www.sunlightsupply.com/shop/bycategory/fans-ventilation-ducting/hyper-fan

 

[Fields~of~Green]

thanks for the info helps alot

ok so we want max yield and cool temps

you dont really wanna cut corners as you end up paying

this is what i would suggest
magnum xxxl or blockbuster air cooled shade
if noise isnt much of a concern then an rvk 6" L1 model and rhino filter there not mega noisy but if its stealth you after then an airforce/iso max type one is what you want
the 5" tt fan would suffice for an intake
you need to extract that hot air good if you can try and direct it to the chimney via the loft
air in needs to be cool if possible taken from outside area that gets less sun
sms hybrid fan speed controler bees knees for for keeping fans at correct speeds with no humming at all when slowed down

that should handle a 1000w too

theres plenty of advise from others too soyou should be set now

start a grow thread and document it plenty of people here to help ya out should you get stuck

 

[Harry Gypsna]

there is also a product called LIQUID ICE by EVOPONICS that allows plants to thrive in high temps.
It is good, they also got LIQUID HEAT for cold temps.

In addition to helping cope with adverse temps they are both also very good tonics, keeps the plants happy with trace elememts, aminos, auxins and gibbs etc

I'd be very interested to see some of the science behind the claims these products make. The industry is rife with snake oil.

Bigger fans Sunzi!
you could get a portable AC, but really for your single lamp grow, an AC is just not worth it for the 2 weeks when it will be hot enough to cause problems. If you move enough air through the tent, the heat doesn't get chance to build up.

 

[Sunzi]

In my 1.2 budbox when I used tents I ran a Etaline 8" fan for out take and a 6" fan for use on a Magnum XXL aircooled shade with a 6" Rhino CF on the end. For intake I ran a 6" TD Silent and had the 6" intake and the 8" out take on a SMS Twin Fan controller. I could run a 1000 watt bulb with that set up no probs but I fed the intake from the coolest side of the house the sun did not shine on If noise is a problem then you can use 2 x 6" TD Silent fans and a 8" TD silent. I found with the Etaline they are great fans and shift a lot of air but the external air noise whooshing out can be a problem so combated it by using 8" silencer.

That's a nice setup you've got in there DD

Noise is a bit of a problem indeed... I would definitely go for something silent...

isomax are good too
BUT in august HYPERFANS will be available across the country
1 or 2 places have em now, but everywhere will have em in august
THEY ARE THE SHIT!!!!!!!

check em out for yaselves people https://www.sunlightsupply.com/shop/bycategory/fans-ventilation-ducting/hyper-fan

Those fans look really cool... very interesting...

thanks for the info helps alot

ok so we want max yield and cool temps

you dont really wanna cut corners as you end up paying

this is what i would suggest
magnum xxxl or blockbuster air cooled shade
if noise isnt much of a concern then an rvk 6" L1 model and rhino filter there not mega noisy but if its stealth you after then an airforce/iso max type one is what you want
the 5" tt fan would suffice for an intake
you need to extract that hot air good if you can try and direct it to the chimney via the loft
air in needs to be cool if possible taken from outside area that gets less sun
sms hybrid fan speed controler bees knees for for keeping fans at correct speeds with no humming at all when slowed down

that should handle a 1000w too

theres plenty of advise from others too soyou should be set now

start a grow thread and document it plenty of people here to help ya out should you get stuck

I'm looking for stealth, so something silent would be good. I will check those items that you mention... I'm still unsure about the money I can spend though... I need to think it properly!
Also, do you think I should go for a 8" fan to extract or is it too much?
That SMSCom 4.5-Amp Twin Fan Speed Temp Controller looks sweet

I'd be very interested to see some of the science behind the claims these products make. The industry is rife with snake oil.

Bigger fans Sunzi!
you could get a portable AC, but really for your single lamp grow, an AC is just not worth it for the 2 weeks when it will be hot enough to cause problems. If you move enough air through the tent, the heat doesn't get chance to build up.

You are so right my friend, I'm pretty sure that's the key point... and I need to start thinking in another way too... the quality has a price... and most of the times the cheap is actually the most expensive at the end...