85 degrees!

[Devlove]

720 cfm active air fan on high currently and vented right out my window, still too hot my room is on the second story of my house is this why it's running hot? What can I do?
Thanks

 

[SmokesLikeBob]

do you have a passive intake, if not, how much cfm, if you do have an intake fan, try connecting an air duct to the outside and bring it closer to the floor, hot air rises so the cooler air is forced to the floor, and your higher altitude could be a contributer to your high temps...either that or you have a defective thermometer! haha j/k
hope this helps!

SLB

 

[Devlove]

So I need an intake fan I thought my 8 inch exhaust fan brought in enough air through the holes on the bottom of my tent?

 

[stinkbudd1]

you need to check the temp of your romm that the box is in your normal temp range is going to be from 5 to 8 degree's higher in the box then the room its in you have more then enough cfm's with your fan if its not your room temp then as the other poster said you need more or better intake i run both passive and assisted air intakes...

 

[Huckleberry Slim]

Yeah bro. you need to pull some cool air into the tent. Maybe get a A/C unit to cool the room off. or turn your Central Air on and force it into the room. Cool.

 

[Devlove]

If I pull my tent farther from the window this ducting can be straighter, would that help?
I looked into conditioners and they are way too much for me right now.
Thanks guys!

 

[stinkbudd1]

If I pull my tent farther from the window this ducting can be straighter, would that help?
I looked into conditioners and they are way too much for me right now.
Thanks guys!

I dont think that is the problem you have what 720 cfm's and a very good fan, a curve or two is not the trouble straightening your exaust wont do it, you need to introduce cooler air into your grow tent from outside it or you simply need to get more air flow from your intake it has to be just about even in order to achieve the proper vacum to pull air in..i hope this helps..Peace

 

[Devlove]

I just closed my tent for the first time today as I had a fan from outside pointed on them all day, I will go to a hydro store tomorrow and see about getting an intake fan, do you have any reccomendations or pics of one you might suggest? I bought a spray bottle to spray water in the room because the humidity was at around 30, my buddy told me that when I get them in bigger pots in a few days they will hold more water and it will be more humid. Will this help temps at all?
Thanks

 

[stinkbudd1]

I just closed my tent for the first time today as I had a fan from outside pointed on them all day, I will go to a hydro store tomorrow and see about getting an intake fan, do you have any reccomendations or pics of one you might suggest? I bought a spray bottle to spray water in the room because the humidity was at around 30, my buddy told me that when I get them in bigger pots in a few days they will hold more water and it will be more humid. Will this help temps at all?
Thanks

Do you have a cool tube you are using or are you pulling through a carbon filter? if you are then you are going to lose some of those cfm's but not to much and with that say you are at 600 actual cfm's after your filter and cool tube then you will need a intake of at least 500 cfm or so to create the vacum you need i as i said i use both passive and direct intake and i use the cheap shit well not really cheap in make up but in cost they actually work very well and two should do you just fine..here they are..

EcoPlus Axial Fans:
​

EcoPlus axial fans are lightweight and durable. They generally run more quietly than other types of fans and tend to use less electricity.
Surprisingly powerful little "suckers", EcoPlus axial fans are perfect to use in cabinets, enclosures and growboxes.

Specifications:

4.5" Axial Fan: 0.23 amps - 24 watts - 112 CFM
6" Axial Fan: 0.25 amps - 28 watts - 235 CFM
8" Axial Fan: 1.0 amps - 102 watts - 647 CFM
​

Also know as muffin fans, due to their flat shape. Rated for continuous duty, 120 Volt AC. Includes pre-wired power cord.

EcoPlus Axial Fans - 4.5 inch:
$26.95
EcoPlus Axial Fans - 6 inch:
$49.95
EcoPlus Axial Fans - 8 inch:
$86.95
​

Now you can just get the one 8" but i think dule intakes work a lot better one at the bottom or each back side,so you can get two of the 6" ones and be very happy...they work great.

 

[sixstring2112]

more humidity is going to make it hotter. what is the temp in your room upstairs? might have to move to the basement.if your room is 10 degrees or more cooler than your tent you just need to put some flexpipe through 1 of the holes in your tent to let in more air. are you cooling a light only or are you going through a carbon filter to? how big is your light(s) and filter?that fan should cool a tent if it has cool air to get.

 

[Devlove]

My tent is 4x4x6.5
I believe I have the daystar ac hydrofarm hood.
No Carbon filter yet but come time to flower in a few weeks I will get one.
Thanks a lot stink budd I will try to get an 8 inch axial fan tomorrow.
Should I get a speed controller for it as well?

 

[stinkbudd1]

My tent is 4x4x6.5
I believe I have the daystar ac hydrofarm hood.
No Carbon filter yet but come time to flower in a few weeks I will get one.
Thanks a lot stink budd I will try to get an 8 inch axial fan tomorrow.
Should I get a speed controller for it as well?

mine is relatively quiet i run it in my bedroom at night and it doesnt bother me.when i run lights off i dont have anything going in my grow room but the circulating fan and its low speed..so i wouldnt think so..but its up to you..

 

[oh really???]

NO NO NO. From the looks of it you are in a closet using a grow tent. (sorry if i missed it) I had a grow cabinet in a closet and I was using a 250hps and had temps soaring to 95 degrees. I could do nothing to lower the temps. Until I made a cooltube. GO HERE https://www.rollitup.org/do-yourself/279224-diy-cool-tube.html .

. . . then exhaust your hot air using your fan OUTSIDE you grow vicinity. you have a high powered fan. do you have an attic above you? if you do then exhaust there. DO NOT exhaust right outside your tent. your intake should be passive. just a hole in the bottom of your tent. there should be one.

. . .if that does not work then you can freeze gallon jugs of water and set them in your tent by the intake. this is like an A/C. I did it with (3) one gallon jugs they fit easily into the freezer and i put a drip pan under all of them for condensation drip.

Doing the cooltube helped the most. You will be amazed if you just follow the directions. I did and I still use the cooltube and i grow in a room. you can get the plants inches away without heat stress. I did max out the efficiency using a 400 watt hps and cooltube. I noticed the plants didn't like the light intensity so i backed off to 8 inches that seemed fine.


. . .also i have lately been dropping my light down and doing a vertical setup. and with a 600hps i can do 12 inches without a cooltube. you should try it. (note) my new temps are way low because of my room. you still have to fight the 2nd floor syndrome. unless you can get the ambient air to be 70 degrees constant your tent temps will be hard to control. Peace out.

 

[stinkbudd1]

NO NO NO. From the looks of it you are in a closet using a grow tent. (sorry if i missed it) I had a grow cabinet in a closet and I was using a 250hps and had temps soaring to 95 degrees. I could do nothing to lower the temps. Until I made a cooltube. GO HERE https://www.rollitup.org/do-yourself/279224-diy-cool-tube.html .

. . . then exhaust your hot air using your fan OUTSIDE you grow vicinity. you have a high powered fan. do you have an attic above you? if you do then exhaust there. DO NOT exhaust right outside your tent. your intake should be passive. just a hole in the bottom of your tent. there should be one.

. . .if that does not work then you can freeze gallon jugs of water and set them in your tent by the intake. this is like an A/C. I did it with (3) one gallon jugs they fit easily into the freezer and i put a drip pan under all of them for condensation drip.

Doing the cooltube helped the most. You will be amazed if you just follow the directions. I did and I still use the cooltube and i grow in a room. you can get the plants inches away without heat stress. I did max out the efficiency using a 400 watt hps and cooltube. I noticed the plants didn't like the light intensity so i backed off to 8 inches that seemed fine.


. . .also i have lately been dropping my light down and doing a vertical setup. and with a 600hps i can do 12 inches without a cooltube. you should try it. (note) my new temps are way low because of my room. you still have to fight the 2nd floor syndrome. unless you can get the ambient air to be 70 degrees constant your tent temps will be hard to control. Peace out.

How the hell did i miss the grow tent in a closet? Wow never even seen that one coming!Good catch oh really..

 

[newbudz420]

common stoner mistake. Is the fan pointing the right way? lol ----- I have mine upstairs with a 1000 watt hortilux (very hot bulb) and 480 cfm through a carbon filter and then light and the temps stay at about 80 in the summer

(

 

[monimoni]

if nothing else works, look into an ihs air cooler plus.. it was the only way i was able to lower the temps inside my 2'x2'x5' tent with a 400w hps.. and since it relies on water/ice, it generates no heat of its own.. i literally stuffed it inside my tent and it keeps it between 78-83F at all times..

 

[mikehaze]

85 degrees isnt really that bad, i know a few people growing in florida, and their grow rooms stay between 80-90 degrees, with VERY healthy plants, let alone the outdoor grows i've seen in florida with temperatures reaching a scorching 90-100 degrees daily now.

85 is a healthy temperature for your plant, IMO.