Venting tent into groom when intaking air from outside

You're going to have a problem with smell. 0 deg air blowing on your plants will damage, possibly kill them. Either way, you'll have little to show for your efforts. Are you using air cooled hoods? What kind of heating is in the room? Are you using a filter for smell or is that not a concern? Why are we talking about winter in May?

I will have a carbon filter. Should have mentioned that. Not using air cooled hoods will be using adjust a wings. 2 x 600 watts. There would be no heating really. There would be a rad in the room but rarely on. 0 degrees celsius I was referring to not fahrenheit. Its about 32 fahrenheit. But this is the lowest it will go. Is this still too cold even with 2 600 watts in a 2.4m x 1.2m x 2m temt. I will also have a twin fan controller with temperature control so the fans switch on and off when the temperature is right. Obviously the fan will be off sometimes when it reaches the correct temperature. Will this cause air to leak out of the tent and smell up the room/house? The reason I wanted to intake fresh air and exhaust in the room is to avoid Flir and to heat the house a little. I was asking about May because I am planning my set up and will be starting in june so will only be 1 grow before winter hits so want to be prepared. Thanks again

you should vent from a climate controlled environment. what will you do when it gets too hot to cool the room or if there is a male plant spitting pollen a few miles away or bugs. you need to filter the intake either way but there more bullshit outside along with not being able to regulate temperature. passive intake from a climate controlled room is always best unless you are running a big room

I dont getting too hot should be a problem at all seeing as how i will be running lights at night and intaking the cold outside air. I get what ur saying about intaking from climate controlled room but i dont really have that option. I didnt think of pollen coming in throught the intake. Was going to put a pantyhose over intake to stop bugs etc but I may get an intake filter.These are supposed to filter bugs pollen etc. I guess my only way to find out if temps are kept right is to wait till i get it

sounds like a headache

Why wouldn't you go reverse of what your doing? Leave the intake as passive to your room and exhaust out of the window you want to intake through. That way you arnt frosting the lady's by forcing frigid air on them, but instead allowing the controlled environment air from the room to be passively taken in as you scrub air out of the box. And run cool tubes with a sealed style setup with air being pulled from outside the tent, through the lights, and back out of the tent to ensure no temp problems.

I have to agree that the sensible option is to vent your tent out of the room and passively draw IN air from the room into the tent.

This will greatly reduce temperature fluctuations.

By keeping the room with the tent in it at around 18C (most rooms are around this temp without heating) and exhausting out of the room this will keep your temps near perfect.

Too much of a swing between HI and LO temps isn't good either.

With a really cold air intake your night temps to go too lo. Stunting growth and slowing it down.

If you run 28c lights on and 15-18C at night lights off, this can cause excess stretching in plants.



J

DoomsDay said:

Why wouldn't you go reverse of what your doing? Leave the intake as passive to your room and exhaust out of the window you want to intake through. That way you arnt frosting the lady's by forcing frigid air on them, but instead allowing the controlled environment air from the room to be passively taken in as you scrub air out of the box. And run cool tubes with a sealed style setup with air being pulled from outside the tent, through the lights, and back out of the tent to ensure no temp problems.

Click to expand...

I dont wanna exhaust through the window because i would imagine 1200 watts of hot air meeting cold air would equal steam or something? Am I right in thinking this would be a problem. I thought that maybe if i exhaust internally I can just leave some doors open upstairs while lights on and it would circulate and the plants would be getting the fresh air they need and lights would heat the air some bit. Am I completely wrong here do ya thing.

Ya I had thought of that because the air I would be pulling through the lights could just heat the room then but would 1200 watts heat the room too much? Seeing as the air in the room that is heated from the lights is being pulled back into the tent and out through the window via a carbon filter and fan. It does solve the problem of heat being expelled outside as the tent shouldnt be too hot with air cooled lights unless the room is too hot. Bad thing tho is I have heard that the air cooled lights arent as effective as like adjust a wings or other lights that arent air cooled and also that sometimes the glass can leak and air can be sucked in through the aircooled lights duct and out into the room and this will be unfiltered unless i have a filter on my exhaust from the tent and exhaust from the lights.
I think that this aircooled lights way seems the best as long as the room doesnt get too hot. The rooms about 2.5 metre(8 feet) x 5 metre(16 feet).

Well I'm on my phone so I can only briefly touch on this but I will post more later... As far as safety is concerned, you will want your bulbs in a tube or reflector of some sort. Yes people grow vert indoors with bare bulb and whatnot but its not smart. If that bulb pops you can light your whole house on fire. Ill take a bit of efficiency loss over burning my place down.

Efficiency loss is neglible due to being able to get the lamps closer.

However the overriding factor in all this is that you simply won't be able to exhaust 1200w straight into the room with the tent in it as the ambient air will be warm. It will enter the tent and become warmer still.

Opening a window just won't help very much. A cold air intake will help slightly but its easier to exhaust and remove hor air than it is to blow cool air into a warm environment.

If stealth is not an issue, then you could duct your exhaust out of the door of the room into the "hallway"?

Then keep the window open or closed depending upon how your temps are during seasons etc.

This way your tent is drawing in the room air which is being controlled by you either opening/closing the window or turning the radiator on/off.

If you continue down the road of exhausting straight back into the room, i guarantee you'll be starting a thread on here asking for help to cool the tent.



J

jondamon said:

Efficiency loss is neglible due to being able to get the lamps closer.

However the overriding factor in all this is that you simply won't be able to exhaust 1200w straight into the room with the tent in it as the ambient air will be warm. It will enter the tent and become warmer still.

Opening a window just won't help very much. A cold air intake will help slightly but its easier to exhaust and remove hor air than it is to blow cool air into a warm environment.

If stealth is not an issue, then you could duct your exhaust out of the door of the room into the "hallway"?

Then keep the window open or closed depending upon how your temps are during seasons etc.

This way your tent is drawing in the room air which is being controlled by you either opening/closing the window or turning the radiator on/off.

If you continue down the road of exhausting straight back into the room, i guarantee you'll be starting a thread on here asking for help to cool the tent.



J

Click to expand...

What about smell leak from the cooltubes. The only cooltubes you can get here are cheap shitty ones. It costs way too much to ship from america and the uk sites have pretty shitty aircooled hoods/cooltubes too. Would they be ok to use? Could I intake air from outside and pull it through the two cool tubes and exhaust into the room. This way the air would be cooler in the room. I could also leave the duct in the hallway during lights on at night

And what about exchanging the air??? Its about more than just keeping it cool.

Here let me link you to a site for designing.

http://urbangardenmagazine.com/2010/07/planning-your-grow

Read it.

Become familiar with the equations required etc and then implement it to your setup.


As for air cooled reflectors I like the BLOCKBUSTER 6".


Cooltubes are shit. They leak where the eye hooks attach to the tube.


You could run air cooled hoods that don't leak and have a carbon filter at the start of the run.

Inside your tent.

Filter ---- hood1 ---- hood2 ---- fan ---- ducted out of room.

Still utilising the above info I provided.

Yes in the ideal world the cold air intake straight to your lighting system would control temps better, but it would bring another added dimension to your grow room, condensation. This could form on ducting, inside air cooled lights, it can increase your humidity to a point where botrytis aka bud rot could grow. Living near the sea your humidity is already going to be high.




J

heisenberg2015 said:

What about smell leak from the cooltubes. The only cooltubes you can get here are cheap shitty ones. It costs way too much to ship from america and the uk sites have pretty shitty aircooled hoods/cooltubes too. Would they be ok to use? Could I intake air from outside and pull it through the two cool tubes and exhaust into the room. This way the air would be cooler in the room. I could also leave the duct in the hallway during lights on at night

Click to expand...

Hi Mate,

Try and vent your tent outside. Your girls will get cooked in the summer and frozen in the winter if you cycle air in reverse with your climate.

If you cannot vent outside, vent in the room but through a filter, for smell.

Can you get some air cooled shades/ranges from London? There are quality shops that carry decent gear.

I have a blockbuster 6", too. I also recommend them. Even a crappy hood can be sealed with masking tape (so you can get it off if needed) I vent the lights to and from a window. The tent is vented to the room and the entire house. A GOOD carbon filter is needed.