small room setup help needed

[sugabear_II]

Okay the basics;

room is aprox 6 feet wide by 9 feet long, 7 feet high. It is a separate room inside the basement and has access to outside air as well as the hot air out of the forced hot air heat.

The plan is to put a 400 watt wardrobe type cabinet in one corner across from the door which will serve as a veg room. The cabinet is light proof and has it's own fan, but would be intaking and exhausting back into the main room. Then in the main room there would be a single 1000 watt hps for flowering. 9 plants in flower marked by the X's with 9 plants in veg in the 400 cabinet. Harvest every 9-10 weeks and dry in the veg cabinet for a week while the next round starts flowering, then take clones and veg the next set of 9

so here's sorta the setup.



Questions;

1. Ventilation - thinking a big carbon filter and a centrifugal fan pulling air out of the room and dumping it into the rest of the basement, but how big will the fan need to be? Does the fan need to run all the time like it would in a small cabinet?

2. Intake - should a passive intake be used from the rest of the basement? from outside air (northeast so three seasons are fairly warm outside)? or from the hot air heat system?

3. Intake fan? should a blower be used to bring in fresh air or can a passive intake work in this situation?

4. Goal for this setup is 2 pounds from the 9 plants under the 1000 watter. Plants would be in soilless containers, at least 5 gallons if not bigger. Is this a reasonable goal without supplemental CO2?

5. I am thinking a stadium would work best with the 1000 hanging horizontally with three plants below it and then the 6 plants against the walls raised by 2 feet or so - basically the height of the containers so that they plants against the wall are not shaded by the plants directly below the lamp. Does this sound workable?

Thanks in advance.. I am not so sure about big room ventilation so help here is greatly needed - please consider the 400 watter as included in the total amount of heat being produced inside the room as it will intake exhaust into the room.

-suga

 

[rasputin]

Like eating an elephant, let's take this one bite at a time...

Solid set-up... typical lay-out that ought to do right by you. You do have space for a small dry cab if you wanted.

Questions;

1. Ventilation - thinking a big carbon filter and a centrifugal fan pulling air out of the room and dumping it into the rest of the basement, but how big will the fan need to be? Does the fan need to run all the time like it would in a small cabinet?

2. Intake - should a passive intake be used from the rest of the basement? from outside air (northeast so three seasons are fairly warm outside)? or from the hot air heat system?

3. Intake fan? should a blower be used to bring in fresh air or can a passive intake work in this situation?

4. Goal for this setup is 2 pounds from the 9 plants under the 1000 watter. Plants would be in soilless containers, at least 5 gallons if not bigger. Is this a reasonable goal without supplemental CO2?

5. I am thinking a stadium would work best with the 1000 hanging horizontally with three plants below it and then the 6 plants against the walls raised by 2 feet or so - basically the height of the containers so that they plants against the wall are not shaded by the plants directly below the lamp. Does this sound workable?

Thanks in advance.. I am not so sure about big room ventilation so help here is greatly needed - please consider the 400 watter as included in the total amount of heat being produced inside the room as it will intake exhaust into the room.

-suga

1. If you're going to pull air from the room through a filter into the basement you'll likely need an inline fan that is 180-360 CFM, depending on a few different things, like temperature differences for one.

2. Yes, if it supplies enough air. If you need a fan, you need a fan. But passive should work. Make sure it's sized right in relation to the exhaust.

3. See above.

4. Can't say. Whole lotta things factor into yield. Genetics, nutrients, environment, light, your skill. Start growing, learn, grow some more, learn some more. You'll be on your way to 2 elbows soon enough.

5. Sounds workable. Never did a stadium op but seen a few that looked good.

Good luck.

 

[hoosierdaddy]

The basement would be your lung room of sorts, if you are not intake/exhausting from/to outside. Now, if there are no central air/heating vents from your upstairs area to the basement, then there is going to be some intake/exhaust issues. Even having your room intakes sized properly, the air has to get into the basement somehow. If there are vents from upstairs, then the air will come from there. If not, then you need to figure out how to open up some intake to the basement...or draw air in from outside via duct direct to grow room.
Same thing with the exhausting of the air...it has to have someplace to go without restriction. Now, assuming you are getting enough fresh air into the basement to satisfy the system, if you are exhausting back into the basement, the heat will keep increasing in the basement, and essentially in the grow.
And an intake fan is really not much help. If the size of the opening isn't properly sized to the exhaust. (at the least 10% larger intake than exhaust, or even more if you cover the intake with filtering material, or run through lots of ducting before it gets there)

IMO, the most efficient set-up is vertical. Especially when considering a stadium type set-up.

If I were to set up that room in my basement, I would vert the light and put it in a dedicated cool tube that leads from outside air to outside air. No need to scrub this air, as the tube keeps it separate from the rest of the grow air.
I would also mount up an approx. 10-12000btu AC unit. I would intake my air from the basement, and exhaust it to the outside. (again making sure that there is intake/exhuast venting from the basement to outside...and this requires proper ducting from the AC exhaust to out) The AC in the room would probably be enough to keep check on the veg cab within the grow, which without some sort of additional air movement could help to heat up the flower room more than wanted. After all, it is essentially a little heater in the room.

 

[sugabear_II]

Thanks guys...

let's see -

there is access to the heat ducting from within the room so air could be pulled from in the rest of the house.

there is also the ability to pull air from outside and or exhaust outside. Wanted to keep away from the external exhaust as this is in the northeast and there will be snow on the ground a few months of the year.

leaning towards intake from outdoors 9 months a year and intake from hot air ducting the other 3 months.

the 400 watt cab is currently used for flower in the basement and temps are not an issue exhausting into and out of the basement.

On yield - currently 8oz are pulled consistently from the 400 watt cabinet with a strain that is either a really fruity ak47 or mass superskunk x blueberry... not sure the real identity of the cut but homeboy has been running it for a few in the 400 cab and seems to have it pretty well dialed.

-suga

 

[SKUNK420]

honestly it looks like you got all the basics thought out and you are thinking what i usually think when i build a room or start a system and that is "will this work right the first time cuz i don't want to rebuild / re-do anything". i would try the passive intake and set up the ventilation like this: filter, light, and then fan exhausting to the outside. if the temp are still on the high side you could try adding an intake fan. yes you will have the have the fan on 24/7 or you lose your smell control. with only 9 plants you'll need a little bit of veg time depending on strain to hit 2 lbs. w/1000 watts. there is a former member of this site who is now a mod on another site who says he pulled 3.5 lbs. from two 600's in a 3'x3' grow tent. i've done 3 different F&D systems in the past and all around 3.5lbs. in a 4'x'6 area with two 1000's.

 

[sugabear_II]

hey skunk420... thanks for the thoughts...

yeah the 9 plants would get 2 weeks clone time plus 6 weeks veg time under a 400 hps so they should be plenty big for flower when they get there.

 

[thekingofNY]

Sugar, i recently built a new basement setup, similar to this except I have a totally seperate veg area in a different part of the basement.... May I suggest 2, 600's for the flowering room, aircooled hoods. Then that way he can have two crops, 30 days apart, and be harvesting once a month with a 60 day strain.

I currently only have one 600 going, but plant to upgrade to 1200 or 1800 in the near future. The only thing stopping me down there is the temps... however with an aircooled hood this wont be much of an issue. I might say otherwise in Summertime, or 1200 watts maybe the limit with no A/C. Right now my temps dont go above 80 when the outside air temps have got near 65 recently. I doubt my basement will ever get warmer than 65ish.

My flowering room is 6x7x7, there is a ton of extra space in there right now, but i need that for my back. Could easily fit 2400 watts in there. Also I use a 400 MH for veg.

The 600's penetrate nearly just as good as the 1000's however make a bit less heat and and still produce alot of Lumens.... i think my agromax bulb states 90 or 95,000

EDIT: I should add my setup is far from dialed in, however I am expecting 2oz every 30 days with only 600 watts, and at least 6oz a month when I go to 1200 Watts.

 

[sugabear_II]

hey kingofny,

thanks for the input...
What size/brand fan and filter are you using?


on the 600s ... my friend has the 1000 watter already - he would like to upgrade eventually to dual digital ballasted 600s, but money is a little tight and the 1000 watter is already on hand not being used.

on the perpetual I've also suggested that he have a 3 week 3 plant perpetual - i.e. harvest 3 plants every three weeks and start three more every 3 weeks... he however is preferential to harvesting all at once although he said he would consider the perpetual idea a little more. Instead his ideal would be 4-5 harvests per year.

King I expect your harvests should be increasing to nearly double that 2oz per 600 per 30 days once you get yourself dialed in...

I should also add that 2lbs is my goal for him - 1.5lb would be more than satisfactory for him with 1lb being acceptable from the 1000.

neways thanks again for the input

 

[thekingofNY]

Sugar, I am using a refillable filter i got off ebay, its only for 200-300CFM, and i am using a cheapo 175cfm 6" inline duct fan from home depot. Got it for about 30 bucks. It says on the box its 250CFM, however i learned here on IC its actuall CFM rating is only 175.

When I add another light to my setup i will upgrade the fan to really get the air outa there, but for now this is working great. Also the ebay filter aint half bad and made a HUGE impact on the smell.... i was doubting this filter with only 5 lbs of carbon in it. But it works... and only cost me 80 bucks shipped i think.

 

[sugabear_II]

bump