i want the best Air intake....

[Guest]

....unit i can make or buy...room is 4.5X 13X 8ft. a6" w/ carbon scrubber can?
do i need an 8"? i also have an air conditioner6000btu, and a 60 pt. air dehumidifier. nemorous fans... but not enough air intake w/o the door being open...time to seal it up and add the RIGHT air intake... so's i can start the co2 enrichment... any help? much appriciated. thanks joe

 

[Guest]

I would close the door and add a green air cd-6 propane co2 generator and a vaportek optimum 4000 for odor control.

 

[R00KIE]

Yeah man... Seal the room and you don't need an intake or an outake with cO2 and a/c...

 

[Maj.PotHead]

2 words darkroom louvers
http://www.bhphotovideo.com/bnh/controller/home?O=NavBar&A=search&Q=&ci=539 my next cab will have these bad boys for sure

 

[thescissors]

i have an 8" in my 800w flowerbox...

 

[Guest]

thank you very much all...so its add c02 to stale air is good enough, or better than piping in filtered air??? is this a topic for discussion or is there a defined better way? much appreciate ur help...i just want to get whats best for my lil ladies.

 

[R00KIE]

If your supplemting cO2 I don't think you even need fresh air...
There's plenty of ppl that use a/c, cO2, fan and filter, in a sealed room.
The only reason you need to bring fresh air in without cO2 is to replace the cO2 depleted air, control temperature, humidity and stale air...
With A/C, cO2, and your fan/filter combo, I don't see any reason you couldn't seal her up and dial her in...

 

[Guest]

I might ruffle a few skirts,but hell I`m known for it....lol.......I`ve got a buddy across the pond that regularly grows 5x8 rooms with 3-600`s and 35 plants ebb and flow buckets and gets what he calls 2 ounces per sq.ft....That`s right .....5 lbs. per 40 sq.ft...Well over 1 + gpw......He uses NO CO2 but uses massive intake and exhaust fans to exchange the air as well as a seperate fan to cool the lights......Normal atmosphere has 3-500 ppm`s of CO2 inherent depending on geographic location and the proximity to greenhouse gases.... So constant exchange of stale air and keeping wall fans from blowing directly on the plants so they can transpire during veg without stress will keep up the absorption of "natural" CO2 levels and mother nature will take care of itself in a perfect world...I`m in the process of setting up perpetual rooms with this technique...film at 11....lol...Be sure to screen off and lightproof any intake or exhaust for the room....PEACE........DHF....... ..

 

[MTF-Sandman]

It's a choice really...you can vent the shit outta it or seal it and run CO2. Personally I like sealed setups since it's so much easier to control odor. It may seem "stale" to you and me, but it's more than ample for plants since they only need CO2 for photosynthesis...they'll produce PLENTY of O2 as a byproduct for the roots to stay happy.

 

[Guest]

sounds good mtf sandman, sub rob, rookie... im leaning tword the co2...i forgot THEY produce Oxy! duh!thanks again guys for ALL the input...

 

[Guest]

OK...Can i use soiless, w/ a flo table and bottom feed? i mean i know ican...is it a good way?
ps sorry Deadheadfred, i thought u were subrob...areU?

 

[Guest]

I was thinking about CO2 but decided to focus more on optimizing air flow and stabilizing the enviro. The 760 cu/ft space has a 1200 cfm exhaust, two 440 cfm and 1 300 cfm fresh air fans. I think most experience great benefit with CO2 because their engineering (typically poor air flow dynamics) was inadequate as an open system combined with better enviro/temp control with CO2 ='s a huge jump in results. Another great thing about CO2 is it's harder to contaminate with things like pests. That in and of itself is a big bonus and odor control is sooo much simpler. If goin CO2 you'll want a fan to cool some sealed hoods. No need for odor control on that ducting if it's set up right.

I started using these great thermostats, A419, from www.mcmaster.com. They're awesome. For about $60 you get a unit that controls one device and when triggered by the setpoint turns that one off and starts up another piece of equipment on the other circuit. I use one to flip/flop between my 2 440's. One is cold outside air and the other is warm house air. My temp swing at lights on is 2 degrees F max. I'm going to use one to control a chiller for the res. They're super accurate with a quick response time. I'm goin to add an air conditioning unit to buffer heat from a dehumidifier at lights off and will use an A419 for more accurate control of temps with a quicker response than the ac's built in stat.

EDIT - You didn't say how many and what wattage lights you're using bro. That's an important piece to know.

 

[Guest]

Not subrob ........Just trying to relate what redux has also said.............Dewd ......Redux........that`s some major air exchange you`re talkin bout huh?...........Co2 is everywhere why not harness it instead of spending megabucks to "hopefully raise the yield"........Anyways........Didnt mean to be controversial,.......only trying to give input on how to avoid expense with little or no noticeable return on investment..............PEACE...............DHF..............

 

[Guest]

Yeah DEDHED...the air in the room is virtually identical to what's outside most of the time except it's warmer. When you step in the room it's like a nice, clean, fresh Spring day . I was taught to shoot for an air exchange every 2 minutes but have found that to be inadequate IMO. My room felt a little 'stuffy'. I don't use the potential all the time but my goal is always max air flow while maintaining optimal temps. I took a hard look at CO2 and decided it wasn't worth it for me but know many benefit greatly from it. Seems like best case scenarion on a properly dialed in setup is about a 15 and maybe 20% improvement adding CO2 but there are other benefits as I and others have mentioned.

Joe...putting together an irrigation system with lines for top water is purty easy. No expereince with what you're planning but maybe top water might provide better media coverage/saturation if using regular pots? Don't know all the intracies so just taking a stab. I helped a buddy set a room up and next cycle we're going to install a drip system for easier maintenance. He's going soiless.

 

[Guest]

What works better drawing air through a carbon filter or pushing it through it?

 

[Guest]

It can be done both ways but I prefer to pull air through. Since I don't use passive intakes anymore there's minimal flow loss.