Heres my setup.......

Closet - 48" H x 20"W x 20"D
Single Waterfarm w/ 6" airstone
6 x 42 watt CFL
Ducted 4" intake and exhaust
mylar covered walls ( mylar wrapped around styrofoam panels)
The room the closet is in is air conditioned down to 70 degrees

I have my temp gauge located about 4" under the lights.......Is that the wrong place????? I can't get the temp in the box any lower than 93 degrees and thats with the room down to 70 and the fans constantly going. What am I doing wrong? What additional measures could I take to cool the box down?

window unit ac

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INDEED

yes, but what would that matter? The room is at 70

If you've got your room at 70F you should be able to get your grow room a lot lower than 93F. Sounds like you've just not got enough circulation going through the closet, Is your exhaust at the top of the closet, intake at the bottom? How's the fan setup, sucking the hot air out the cab with passive intake? Take it your exhaust is 4", how big's your intake, that should be double the size of your exhaust or two intakes both the same size as the exhaust.

A fan in the closet just to circulate a bit of air will help prevent any hotspots that might be building up around your lights.

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My 250w White Widow Grow

Simple nOOb instructions for growin' da dankness - Stinkyattic

Noob's guide to growroom setup - Rhizome

Cheap & easy diy cloner - Justanotherbozo

"An' though the rules of the road have been lodged,
It's only people's games that you got to dodge" - Bob Dylan

sorry. hers my setup in a hand mad drawing(im ghetto)

hook ducting to ur a/c(get creative and take a trip to hopmedepot) run it to ur closet and hook an 8" duct fan to it(if u use smaller ducting or a lower powered fan ur A/C will freeze up. not enouf cold air able to flow thru ya kno bro!)

now all that air is being concentrated to ur gro room!!! i bet ur sitten there all cold and shit. hahah bro i did the same thing! good luck

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im getting a digi camera soon so ill be able to show u better. whoops 4got the pic here it is!

Attached Images

gro box!.jpg (48.9 KB, 62 views)

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INDEED

no no no(bops on head) i kno what hes talken bout


(to OP)i got u covered buddy. ask me anything. pm me whenever!

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INDEED

Your Temp gauge is under the lamp you said 4"?

If so that is not the room temp that is the temop under the lamp!!!

I would put the temp gauge above the lamp to get a more accurate reading..

Good Luck GL

If it was 93" I think that plant would not be happy @ all...

How do they look-Happy or Bad?

where are your intake holes?
passive(hole) or active(fan)

What CFM rating is your fan?
Is the fan sucking the air out or blowing the air in?

What is the temperature at the floor of the space?
your thermometer may be measuring radiant heat.

Is there a fan inside the closet?


You gotta get the air moving...

both the intake and exhaust are 4" and they are rated at 80cfm There is not an additional fans in the closet. I thought the thermometer was supposed to be close to the plants.....should it be above the lights......? I'd rather not add more to the closet.....second intake fan, third fan in the box, etc..... Is there a way to change my current config so that it works right? What if I take my intake ....move it from the bottom of the closet and put it at the top and use it as a second exhaust, or will I still need a fan in the closet to move air around? As far as how to the plants look.....Haven't got to that step yet. I want to keep testing the grow box to make it right before actually starting.......getting very impatient.

.....temps ABOVE lights is 87.6F temps UNDER lights 93.0F

Temp gauge should be located at the hieght of the tops of the ladies because this will measure your combined interior oscillating fan temp with your light temp at the plants canopy and thisis where it matters most. Right under your light it could be 100 and then the tops of your ladies be 75. Depending on how many CFM's you are moving through your box just keep an eye on humidity because mold will ruin your WHOLE crop!

Like signman says measure temps at the tops of the plants (or where they're going to be in your case, 4" is about right as you're using cfl's)

If i'm understanding you correctly you're using 2 fans, one for getting the heat out of the cab and one for getting fresh air into the cab? If thats the case, i'd use both fans for drawing the hot air out and make some more holes to be used as passive intake. This way you'll double the amount of air circulation and i'm willing to bet you'll solve your temp problems

e2a you might be able to get away with just adding a passive intake by adding another 4" hole at the bottom

__________________
My 250w White Widow Grow

Simple nOOb instructions for growin' da dankness - Stinkyattic

Noob's guide to growroom setup - Rhizome

Cheap & easy diy cloner - Justanotherbozo

"An' though the rules of the road have been lodged,
It's only people's games that you got to dodge" - Bob Dylan

So with two 4" active exhaust and ONE 4" passive intake hole I should be good? Will I still need a fan in the box?

two x 4" active exhaust but more passive intake, ideally it should be double the size of your exhaust, so 4 x 4" holes or 2 x 8" holes, but you can prob get away with a little less.

I edited the last post to say try just adding another 4" passive intake or removing your intake fan and making the hole 8" see how your temps are and add the fan back as an additional exhaust and more intake if needed.

e2a - as for a fan in the box, it does help to have one in to reduce any hotspots, reduce chances of mold , stengthen stems etc

__________________
My 250w White Widow Grow

Simple nOOb instructions for growin' da dankness - Stinkyattic

Noob's guide to growroom setup - Rhizome

Cheap & easy diy cloner - Justanotherbozo

"An' though the rules of the road have been lodged,
It's only people's games that you got to dodge" - Bob Dylan

dude when i get pics of my shit u will kno what 2 do.

all this other stuff is....well....there only so much a fan can do!

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INDEED

I'm sorry i disagree, if he's venting to and from a room with a temp of 70F there's no reason why the extra circulation he'll be given by rearranging his setup won't get his temps within an acceptable range.

__________________
My 250w White Widow Grow

Simple nOOb instructions for growin' da dankness - Stinkyattic

Noob's guide to growroom setup - Rhizome

Cheap & easy diy cloner - Justanotherbozo

"An' though the rules of the road have been lodged,
It's only people's games that you got to dodge" - Bob Dylan

dude trust me i experimented with all of what your talking about.(granted i have an hps) but still if he wants any real wattage with cfl's hell get more=it getting hotter. just dude u will have to see. i love when growers challenge other growers(not to be mean it just drives me to make the perfect set!) It's truly the love of my life!

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INDEED

Hennesy I can't wait to see your setup. I anxiously await....


What are the temps at the soil level?
What are the temps in the furthest corner from the lights?
What are the temps at the top of the canopy?

2 active exhaust is probably best with passive intake holes. Are your exhaust fans at the top of the box or the bottom?

The temps of the leaf surface needs to remain under 80 degrees for maximum growth. Anything over 80 on the leaf surface will slow photosynthesis (sp?) down greatly costing you in plant health and growth.

Buy yourself a small temp gun and see what your different surfaces are. Flat white reflects the lowest heat imo (80 degrees at surface vs 94 degreee heat reflecting off mylar) so losing the mylar will help.

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Haze(y) Grow Log:
http://boards.cannabis.com/grow-log/...-grow-log.html

"Your deeds show your character."-StinkyAttic

If you want to end your issue and control the ODOR!!!!

SHUT DOWN YOUR INTAKE!!!!!!

I did a set up in NJ 8yrs ago for a buddy and it is still running strong in an ATTIC!!!! Does not get HOTTER then an ATTIC

Why be exhausting cool air to take in hot? Just exhaust!!!!


The room is still going now with out any issues and it is 90+ and humid there....

You don't need a intake with a closet That IMO!!! You are taking in air just by having a exhaust... Because you are pulling in the air from throughout your house hence limiting your ODOR because everything is out!!!!

Please just try it and let us know how you make out!!!!

Good Luck GL420

Yeah.....i actually tried that at one point GL and cant say I had good success without an intake. Yep it pulled air from the rest of the house.....and when it ran out of that it started pulling air from the attic. HOT air.

NOT impressive OR very cooling.

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Haze(y) Grow Log:
http://boards.cannabis.com/grow-log/...-grow-log.html

"Your deeds show your character."-StinkyAttic

Hey WH whats going on stranger?

Each situation is different but I would not rule it out in this instance. It is definitely worth a shot. All he has to do is shut down his intake and check it out in 1 HR.... He has nothing to loose and what does not work for some works for others...

this is a good point GL......not everyone's attic is the sauna ours is.

__________________
Haze(y) Grow Log:
http://boards.cannabis.com/grow-log/...-grow-log.html

"Your deeds show your character."-StinkyAttic

WH You were doing a closet under the same conditions?
I did not think you were going to question my suggestion of shutting a intake switch for a Hr but OK....
Most important Does he have an Attic?
Does he have a Ridge vent in his Attic?
Does he have any Thermostatic fans up there?
What floor is he growing on?
The door to the room can not be shut?
The Attic can not be Sealed off?
Is the Attic finished with Bedrooms ( IN MY HOUSE IT IS)...

There are way to many variables to list.....

Lower the CFM's on the exhaust if necessary.

Circumstance Circumstance Circumstance.....
Variables variables variables
WH is there something wrong with me giving a suggestion? So you have tried it and it was not good for you? There is no way he can shut down his intake running a exhaust only to cool his room?

I'm just trying to help him the same way you tried to helped me when I went DWC. If it works great if not it did not kill his plants. I have seen it work in the summer w/ Attics. My friend has a room that's intake and exhaust is just running into the same room next to the grow which is Cool... Cold air in Cold air out beautiful.

Good Luck GL420