Just inherited a house with a good sized attic!

take a pic of the attic.

NegligentMother said:

...my 'boy' is hardly wasting energy... he pulls a gram a watt in that 4X4 space. and he hardly vegs his plants. im pretty sure you aren't gonna harvest any where near 2000 grams off ur little 400 watt there buddy.


btw its a duelzilla cool tube with 2- 1000 w bulbs in it. stays mad cool. and its on a light mover..

more light=more yield...please tell me where you found otherwise?

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Well, true, but you CAN give too much light, not saying your boy is, and I'm not looking to harvest vast amounts. I'm wanting this to be fun and to save a little money in the long run by smokin my own grow. A 400w is all I'm capable of and this thread isn't about my yield or my lighting. This is about ventilation. Take your high horse and ride it off a cliff. Sounds like you need a spliff.

See what I did dere?

amsterhamster said:

I've got a grow room inside the house (this house is small but it's good cause I live somewhere else.) I'm wanting to vent through the attic because the AC only keeps room at around 75 because of attic leaks. So, I figure it's better to have it vent up there.

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Heres a few picts that might give you some ideas. Also Info for a good inline fan.
www.tjernlund.com/Retail/fans.htm It's actually 530 cfm. The model # M-6. The fan moves a ton of air. I have used the valuline and cap fans in the past. This fan is much better in my opinion. You can Email them with a competitors web sight and fan , like the valuline, and they will match the price. I got mine for $90 shipped. I use it to exhaust air from two small rooms, and I have a 465 cfm pulling threw two reflectors.

This is my attic and my 4x4x8 grow room. I haven't finished coating it with mylar but you can see my AC vent which will pour cold air directly into the grow room.

The attic has insulation all around which I'll even out later, it also has insulation between the support beams of the roof. The big vent is the attics "exhaust". Those two white pipes are my bathroom exhausts.

[edit]
Oh also, thanks +Rep

yeah i mean if ur just lookin for some personal then yeah youll be fine with a 400. didnt mean to sound like a dick...imo u cant ever really have too much light inside. its almost impossible to get close to the lumens that the sun produces per sq. ft. heat can be an issue tho.

as for the spliff...ima bouta smoke a j of some jack herer right now.

S'all good. Just trying to do the best I can with what I have. I'd like a high yield (even though I wont use it all) but like I said, I have my ways of making it last. Had some 8 month old blueberry that smelled, tasted, and hit as good as it did when I first got it.

yeah i can make 400 grams last.