Getting Ready to Flower, Temp Problems

the cheapest solution is proper ventalation fans and duct work..a portable ac..ohh about 300-400 bones for a new one then you have to rely on that ac never failing. were if you get your vent done right the first time..at least around 80 degrees in there..there would be no need for any ac..its a t5 hood, small one at that, not a hid..
should be really easy to cool..you need INLINE DUCT FANS!! 40-50$ vs portable indoor ac 300-400$

Rather than trying to raise the inline fan, could you just add a section of duct to the inlet of the fan and run that duct up high so it draws off the hot air?

A portable A/C will not work for you. If you currently have no place to exhaust your room, where would you exhaust the A/C? Portable A/C's have exhaust ducting.

Try and keep your temps under 80. a couple degrees over will not have devastating effects. Can you just keep the door open until you square away your ventalation? Temps in the 90's will have a more harmful effect than 1 wall not reflecting light.

I know you think you're not handy, but it's never too late to learn new things. There's plenty of folks here that can walk you through most any procedure. If you have most of your fingers, two legs, and one good eye, there's really not much you can't do with a little help. The next time you need to do something with your op, just send me a PM describing the project. I'll send you a detailed list of the tools and materials you'll need. Then, I'll walk you through the whole thing. Don't worry about screwing something up...we're not going to have you wiring up 480 volt three phase panels.

Have a look at out thread to see what a couple guys and some tools can do.

https://www.rollitup.org/indoor-growing/407048-20-000-watt-medical-grow.html

LHighChief said:

So Trichome, do you suggest I invest in a portable AC or is there a cheaper solution here? I've pretty much run out of rooms for fans...there is a ton of circulation in there.
Do I need a bigger push on my intake duct?

Click to expand...

As others have said there are cheaper solutions but i got one and havnt had an issue with heat ever. Just make sure you get one that you can program to click on and off at certain temps

collective gardener said:

Rather than trying to raise the inline fan, could you just add a section of duct to the inlet of the fan and run that duct up high so it draws off the hot air?

A portable A/C will not work for you. If you currently have no place to exhaust your room, where would you exhaust the A/C? Portable A/C's have exhaust ducting.

Try and keep your temps under 80. a couple degrees over will not have devastating effects. Can you just keep the door open until you square away your ventalation? Temps in the 90's will have a more harmful effect than 1 wall not reflecting light.

I know you think you're not handy, but it's never too late to learn new things. There's plenty of folks here that can walk you through most any procedure. If you have most of your fingers, two legs, and one good eye, there's really not much you can't do with a little help. The next time you need to do something with your op, just send me a PM describing the project. I'll send you a detailed list of the tools and materials you'll need. Then, I'll walk you through the whole thing. Don't worry about screwing something up...we're not going to have you wiring up 480 volt three phase panels.

Have a look at out thread to see what a couple guys and some tools can do.

https://www.rollitup.org/indoor-growing/407048-20-000-watt-medical-grow.html

Click to expand...

Hi Collective - thanks for the support. The only reason I have the wall up is to keep it dark for flowering. The issue is I won't be home to always open/close the door, so I need to make the temp stable with the door closed.

In a couple hours I'm going to go get some supplies and build a shelf to either hold the fan or just the ducting.

And although I used like two rolls of duct tape, that negative pressure from the inline fan pulled the sheeting off overnight. So I'm going to also find something to keep this sheeting up and secure...hopefully something besides nails or a staple gun.

Velcro it.

Take a look at this basic closet setup. Note: this was 6pm on a day where it was 100 outside. 82 max in veg when it was mid-upper 70s in the house, lights on 24/0 at this point. Door always closed. Using a 240cfm booster duct fan for exhaust and passive intake only.

[video=youtube;KhLA6ySCdBM]http://www.youtube.com/watch?v=KhLA6ySCdBM&feature=player_embedded[/video]

So I moved the exhaust to the top of the closet. The inline fan is sitting on a shelf outside the closet with a 4" duct running through the closet, pointing upward. There are two passive intakes now on the bottom. I've also played around with my AC and gotten the ambient air of the bedroom to be a few degrees cooler. So, after all that, the temp is sitting around 85-87.

I'm now super stressed since I've put in a ton of money and time to this project and really don't know where I can go from here. I have so many damn fans in there, I just don't understand why I cant get that temp down.

Bro your still blowing the hot old air into the surrounding grow area. Can you run a duct to the window, and use a piece of solid cardboard wedge into the window space tightly(keep bugs out) and run the duct thru a cut hole in the card board. This should complete your ventilation.

I unfortunately don't have a window in the bedroom. The bedroom is a big loft, so all windows are on the first floor or not in reachable distance.
I have the intake duct pulled far out and away from the closet in order to get cooler air. The exhaust, as you can see, is blowing out into the open-end of the closet. I figured this was the most logical way in order to keep them from mixing air. The only other thing I can think of is to duct the intake straight into an AC vent...but that AC vent is on the ceiling in the middle of the room, which means I would never be able to have people over at my place again.

So...if there wasn't ventilation, the temp would be around 91...it's at 85/86 now, so it is doing something, just not nearly enough.

Do you think I should cover up that second passive intake? Is that the problem sine the warm air from the closet is entering in that hole? I can also add another duct down there.

LHighChief said:

I unfortunately don't have a window in the bedroom. The bedroom is a big loft, so all windows are on the first floor or not in reachable distance.
I have the intake duct pulled far out and away from the closet in order to get cooler air. The exhaust, as you can see, is blowing out into the open-end of the closet. I figured this was the most logical way in order to keep them from mixing air. The only other thing I can think of is to duct the intake straight into an AC vent...but that AC vent is on the ceiling in the middle of the room, which means I would never be able to have people over at my place again.

So...if there wasn't ventilation, the temp would be around 91...it's at 85/86 now, so it is doing something, just not nearly enough.

Click to expand...

Get a jig saw $30(or get hardware store to cut it) and a cheap door $30 ,cut a hole in door up high to suit ducting(hang it from hooks and wire up high ) and have some slack in ducting in case you open and close that door. When u have real estate inspection put the old door back on at the hinges.

85/86 max isn't terrible. If you aren't flowering yet you can hold off for a while until temps cool off outside and see if your indoor temps come down a couple of degrees. 85 is the max I'd ever want to see during flowering, and not very often if it could be helped.

So I closed that second intake an hour or so ago, and the temp is now around 83. So it's in that range now, but still not ideal. I'm a lot less stressed though that they're not melting in there lol

good deal..83 is workable but id still work on getting those temps down and proper vent inline fans. then let em rip after the spectrum change out

a good trick i use to force them to grow less taller and more bushy if i have to..add 2ml of bushmaster to the feeding reg one time..thats it..
it will keep em sqaut and stout..
put on some nice big nuggets for ya if you hit em again with 2ml about week 3 of flower..

ULMResearch said:

85/86 max isn't terrible. If you aren't flowering yet you can hold off for a while until temps cool off outside and see if your indoor temps come down a couple of degrees. 85 is the max I'd ever want to see during flowering, and not very often if it could be helped.

Click to expand...

true..
but man..i hate working in there when its 85-86 wooo..ehhh
lol

TrichomeTrent said:

When speaking of closed rooms its really irrelevant what our houses are at

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wrong. the temperature around your closed room has a lot to do with the temp inside. I use my ac to cool the room that my intake fan pulls air from. Even the temperature outside has an affect on temps inside.

For real.. I didn't want to ask him if he ever lived somewhere that got over 100 for days on end. The thermal energy is absorbed by everything and with warm humid nights there is little escape. That shit builds up and up until the point that you have to run the AC 24/7 and it's still not enough.

Maybe he isn't in the US.. but ask anybody in the middle of this heatwave and drought and it can be brutal if you aren't prepared. My closet runs cool enough, but I got lucky.

Hybrid Theory said:

good deal..83 is workable but id still work on getting those temps down and proper vent inline fans. then let em rip after the spectrum change out

a good trick i use to force them to grow less taller and more bushy if i have to..add 2ml of bushmaster to the feeding reg one time..thats it..
it will keep em sqaut and stout..
put on some nice big nuggets for ya if you hit em again with 2ml about week 3 of flower..

Click to expand...

Hey thanks for the advice.

What do you mean by 'proper' inline fan? Is there something wrong with the one I have?

So I am on day 6 of flowering.

I had gotten the temp down to 81-83, which was as good as I could get it. But all of a sudden the temp shot up to 87 and I have no idea why. Nothing has changed. The plants are real unhappy with me and I'm now completely stumped, and subsequently fucked since this 6 degree fluctuation occurred without any empirical reason why. AHHH!

you say you are growing in a loft so i am imagining that that is the highest point in your place? well heat rises so all of the heat in the house is rising to where you are growing. right from start thats a bad design and strike one. you want the plants as low as possible in any structure. the next thing i notice is your exhaust setup. its not doing anything but stirring up your hot air. its blowing out of the closet into a room with no windows to vent the heat. you are in essence increasing the ambient temperature in your bedroom to the point where the closet and room are roughly the same temp. some hot air is escaping from under the door but not much and not nearly enough, even with the door open, strike two. so now we have traced your heat problem to the bed door. short of cutting a hole in the ceiling(which is so easy btw, you could even hire a guy to patch it for $100 max) the only thing you can do is get the heat out through the bedroom door. this can be done by simply placing a fan in the open door blowing towards the nearest window. then another fan blowing the air out of the window. if you are going more low key then you have to modify the bedroom door and add a fan sucking the hot air out. then you need to get a window fan which will suck the heat out of the house. actually a few of these upstairs would work wonders for your heat problem http://www.walmart.com/catalog/product.do?product_id=16225280&findingMethod=rr. they are dual control so they suck air in and blow air out. so if you had 2 upstairs you could have one sucking air out and one blowing air in. or when its cool at night you have them blowing cool air in all night and then it will take alot longer to heat up the house the next day. you can play with it and see what works best with the airflow in your house. the ambient temps in your apt is whats killing you. but you can tackle the problem easily. i know those fans are a bit pricey but they sell cheaper ones there to, like $30. dont let there be a strike 3, you can prevent it.

Thank you for the advice.
The ambient temp right outside the mylar wall is 80 degrees. Next to the intake duct it is 74. I can extend that inline duct around the corner and down the stairs where the temp is 68. I do not have a place on the first floor where I can grow or a nearby window. I can also add ducting to the exhaust and push that air out the opposite way of the intake.