New Grow Room - Semi Noob

Hi RIU,
Background:
Just got out of my old apartment with a little 4x8 grow tent and now get to grow in a whole basement lol, but my thing is I have all this crap from old grows.
1x 1000w Virtual sun digital ballast w?HPS bulbs
1 x 600w Virtual sun digital ballast w/ MH bulb
2x Hydrofarm T5 4 lamp with both bulbs and backups
2x Air cooled reflectors
a shit ton of 1 gallon square pots and 7 gallon round pots
1x 55 gallon drum full of Subcool's SuperSoil
2x 4'x100' Reflectix (wicked cheap 'cause of contractor's discount)
10x Joey weed C99 beans
and my local hydro shop sells Roots organic so I just go there for soil.
+ a whole bunch of other misc crap

What I was thinking about was going big by building a flower room 16 x 5 x 8 in the basement and covering the walls with reflectix and laying down another set of tarps for the floor. I like to do 1 plant every 2 square feet, fim and lst the little bitch while letting her veg out for 56 days then 12/12 for almost exactly another 8 weeks.

The issue with the room was that I wanted to get this http://www.virtualsunhydroponics.com/Agricultural/products/VS1000CRDS-3.asp?rt=2 this is the exact light that my first one was but its just a set of three more. I figured that I would get this and line all four 1000 watters up with air ducts and let em rip.

Is that way overboard with lights? I mean 1000 watts for 4x4 is kind of extreme but would it be just redundant or would i get wicked dense nugs. each 4x4 square only holds 4 plants shaped like little bushes, by the time bloom is done they fill almost the entire space.

I figured I need 4 clones every 2 weeks for a perpetual harvest so I thought that i would use my 600 watter to veg them out in 1 gallon pots @ 1 per sqft which totals to a 4x4 area for pots alone. Idk i was thinking of maybe 4x8 for the veg room with the t5s keeping mom and clones alive on the other side.

I've never used odor control except for ona but i figured I would probably need to for this grow. Can I put a carbon filter on the end of my intake for the lights and just duct the whole room out through them?

So in closing:
1) Is 1000 watts a psychotic amount of light for a 4x4 area, should I double the sizes so that its 8x8 for a total room size of 8x32 or maybe just make each light cover a 6x6 area?
2)What kind of exhaust/carbon filter would I need? (suggestions would be really helpful)
3) Does anyone know of any similar deals on the lights like the one I posted?

Thanks for your help and reading the whole thing I'm wicked baked at the moment, let me know if anything doesn't make sense.
http://www.virtualsunhydroponics.com/Agricultural/products/VS1000CRDS-3.asp?rt=2

Personally I'd set up completely seperate ventilation on lights and cab.

1. You are likely to need more ventilation on the lights than you do the tent.
2. I wouldn't want to send 4000w of heat through a carbon filter. I don't know how it would be effected for sure but I wouldn't risk it. I don't know how true it is but I've read about reactivating charcoal by putting it in the oven.

Just my opinion based on reading and my train of thought, not from first hand knowledge

I was thinking like this


Grow room Air =>=>=>[ Carbon Filter ]=>=>=>{Fan}=>=>=>[COOL TUBE]>=>=>Duct=>=>=>[ COOL TUBE]=>=>=>{Fan}=>=>=>[ COOL TUBE]>=>=>Duct=>=>=>[ COOL TUBE]=>=>=>=EXHAUST OUT THE ROOM

Ah, derp so I suppose my second part is void. I still think there's a possibility you might want or need to vary air extraction between tent and lights. You can always change it up later.

Voidling said:

Personally I'd set up completely seperate ventilation on lights and cab.

1. You are likely to need more ventilation on the lights than you do the tent.
2. I wouldn't want to send 4000w of heat through a carbon filter. I don't know how it would be effected for sure but I wouldn't risk it. I don't know how true it is but I've read about reactivating charcoal by putting it in the oven.

Just my opinion based on reading and my train of thought, not from first hand knowledge

Click to expand...

I agree with vokdling. Make 2 different vent systems. One for the lights one for general ventilation. Do not try to daisy chain all 4 hoods they only have 6" connections. Bring in a 10" supply from outside your room, split this into two 6" lines, run each through 2 hoods. Then either use a 6" fan on each line and "Y" back into a 10" or get one 10" inline fan after the Y.

Then for proper order control, I'd put in at least a 70 lb carbon filter with an 8" fan and matching passive air intake openings

so wattsaver if i am understanding you right it would probably be best if i just made the room 8x8 or 12x12 so that I can run 2 lines of ducting parallel to each other? that actually makes a lot more sense. thanks a lot. now do you have any idea where i might get a good deal online for the filter and fan? my hydro shop only carries ona(BOO but then again i never needed it)

also does anyone know anything about C99? I was doing NL#1 and I just wanted a change + i was moving soo... no maryjane in the u-haul

iv put the filter on same line as the cootube is on its jusr economics iv put it on the end too so it dappens the noise of air being extracted although i did it on 1 600w light not 4kw... but u have nout to worry about as long as ur fans are strong enough and u keep it on the intake end, i remember one time i had my intake air blowing thru the cooltube so it could warm the air up in winter its just economics sounds like a fukin good setup that man wasting alot of ligh thought by the sounds of it

From an economic standpoint.

If your lights need more cfm airflow than your tent you be able to use a smaller and therefore cheaper air scribed/ carbon filter if you run seperate ventilation

But wouldn't the grow room require more cfm than a 6 inch duct?
I mean if the room was 12x12 wouldn't the math for exhaust go like this: 12x12x8=12672
How would I figure out the cfm airflow requirements for the ducting?


Christ how would I even go about getting an accurate number? every reference I check has different information? anyone with a similar sized room want to tell me what they use just for carbon filter and fan?

12x12x8 = 1152.

That would be 12672 cubic feet. How many times do you want the air changed per hour? My research is in cabs which we tend to run differently. I'm thinking it's 5 an hour if not battling heat. For sake of calculation I'll use that for demonstration.

1 exchange an hour would be 12672 divided by 60 because fans are rated in cubic feet per minute.
Edit: I get 12x12x8 as 1152.
1152 / 60 = 19.2 cfm fan for one exchange per hour.

Five times
1152 x 5 = 5760 / 60 = 96
Or
19.2 x 5 = 96

50 times an hour
1152x50 = 57600 / 60 = 960 cfm
Or
19.2x50= 960

These would be the fan requirements. If you get an inline ducting fan that's rated for what you need then that size ducting should be able to handle it

Get a better calculator. = 1152. So a good 6" fan will do 400 cfm add resistance of filter you get around 350 so 1 exchange every 4 min but that's at max speed. An 8" fan you'll get about 550 cfm out the filter. This fan can be run at a much slower speed to achieve the same results. (less noise, longer fan life).

I like the idea of 4 small grows in separate rooms or in one long one, only if you don't have a whole lot more to do with your time. If there are other demands on your time you may want to consider just 2 rooms.

sorry guys like i said i'm pretty baked atm and i have no idea how i came up with that number lol but would this work or at least something like it?
http://www.ebay.com/itm/8-Hydroponic-Inline-Fan-Odor-Carbon-Filter-Scrubber-Grow-Room-Tent-Light-/140637226558?pt=LH_DefaultDomain_0&hash=item20bea1c63e.
or
http://www.megawatthydro.com/Hot/Air-Refining/Mountain-Air-1040-Typhoon-10-737cfm-Combo/77556.aspx

what about for intake? i figure no passive on this one so maybe a fan with 2/3 the cfm rating?

and now back to the bong