vent and air scrub

I was thinking running air from the room right over the lights, and right back out to the room it came out of...but the the outside room will get real hot. so maybe a separate discreet outtake fan from there , headed out roof or something for that. and you are right I will need an intake with hepa. when you say burping you mean negative pressure pulling the walls in? thanks for the tips I will keep an eye on the humidity. I like it low anyway less problems. Thanks again guys this helps. My first real spot and I wanna do it right.

Yeah. Burping to me is when the negative air pressure is stopped for a moment and the smell of all your flowers is no longer passing through the filter. If it burps to often you might as well not even bother filtering?

Oh... Let it be known. Cheap scrubbers off of EBAY suck! Buy name brand! I had a stupid location, with stupid neighboors, and almost had to talk to stupid cops all because of cheap scrubber and my poor judgement. Someone give Uncle Pirate a bunch of Rep for helping us move one day super fucking fast!

Bigtacofarmer said:

Someone give Uncle Pirate a bunch of Rep for helping us move one day super fucking fast!

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That's when you learn quickly who your real friends are.

Cool man. Sounds like all I need to do a little trial and error now.

If the landlord was on here I'd thank him too. Don't ask don't tell.... the heads up saved our butt!

fattiemcnuggins said:

Cool man. Sounds like all I need to do a little trial and error now.

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Good landlords are hard to find. Had a few bad ones. One I should've sued. But I couldn't stand to look at his stupid face in court without kicking his ass. Looooong story. And I'm not the violent type.

Cory and trevor said:

Really? All the stuff I saw on installation said the opposite. I thought like you that drawing it was better than pushing it but the videos all said push across the lights because the heat would roach out the fan. That made a lot of sense to me, I burned up a dinky 163 CFM fan and I think that's why. You're already doing what I want to do though so experience trumps. Does you fan get smoking hot?

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Pull the air. The rise in temp isn't enough to harm your fan, unless your airflow is too low to even be cooling your lights properly. Pushing the air will cause hot air leaks to vent into your grow area. You want negative air pressure in your grow area so that all air leaving the grow area goes thru your filter before being vented outside. Filters are designed to work in suction. That's why the pre-filter is on the outside. 400 CFM is a little low for two 1000 watters. If you vent them in series, the second light will be hotter. Venting in parallel would be more effective, but more complicated to run.

Bigtacofarmer said:

I have about twice the air leaving than coming in. Keeps it from burping. If venting outdoors consider putting some ONA blocks on the way out. I've noticed the carbon filters don't work as well when its really humid. Dehumidifiers help but I've still caught it stinkin when the humidity is really high. I use a Hepa on intake and Active Air leaving. All my air leaving passes over the bulbs as well.

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That's not possible. You would soon have an absolute vacuum in there. Perhaps you mean the exhaust maintains a negative pressure inside your tent?

When I pop the door it goes whooooomp. My tent is made of drywall and 2x4's. Vacuum, I suppose, you have to put your face in the corner to light a joint! Works good!

Sounds like you're doing it right.

Trying too!

I got AC too it already runs way less.

Ok this has all been done before but I hate searching for threads. Can someone point me to a GOOD mini-split will last. I could find a cheap one on my own but I am wondering , which specific models are people using? I think I heard mitsubishi is a good one.>?

http://www.sogoodtobuy.com/split-air-conditioner-s/89.htm I think glad sent me this link a while back?

Thanks. Yep he prob did I remember the big minisplit debate just didn't feel like doing the reading today loL

vacum vacum

I only run one HID lamp, (1000 W), but I pull my hood air from outside through a HEPA filter and through the hood.
From the fan it splits into a couple 3" PVC sewer vent pipes and exits the roof up above.
I ran the sewer vents inside the walls upstairs; so whenever I tape the drywall you wouldn't even know they are there.
No noise - I am running a high output 4" FanTech I got from Behler-Young and it doesn't make much noise even if exposed.

For Winter I have been just running some fans and dumping heated air from the room into the basement.
I have a small AC unit I mounted so I can build a temp wall out of plastic and PVC pipe to shroud the bloom room opening.
My Neighbor is AC guy and he tells me that running the AC unit in the basement will be very efficient because the coil will be pulling 70* to 75* inside air over it.
So I'm hoping this will give me a little more temp stability this year.

Last year I was pushing air, (had been for a long time), and a piece of tape was removed to clean glass and not put back
All year I had a little 'space heater' going from the heated air escaping the hood.
Of course I was too stupid to realize what was happening, and looked for the cause of temp rise everywhere but where it was.
By the time I figured it out I had a new hood and stuff ready to install; but it was comforting to know why my temps had spiked last year all of a sudden.