4 600 hps grow help me build my room please!

[ninjaboy28]

hello to all my fellow growers - i need help big time.
i have a new room that i just finished the build out for
i plan to use 4 600 watt hps ( air cooled)
I need help to to set up the airflow for the room.

the size of the room is 14' long by 9'wide and 7 ' high

i need to vent the air up thru the roof of the building which is 14' above the
7' room
i am planing to treat the air first with ozone then carbon filter - i have built out a seperate room to do this
my question is what size fan do you think i need to vent the air ?
i plan on venting thru a 8" pvc pipe tru the room above and roof (14ft)
thank you - ninjaboy

 

[ninjaboy28]

some pics of the room

 

[ninjaboy28]

ttt

 

[~fvk~]

If you're going to do it that way, I'd probably use a 12" fan reduced down to 8", with 6-8" increasers/reducers on your hood's duct ports, along with some method of speed control. I don't know if a 10" fan would cut it man, with a carbon filter and hella cfm reduction.

 

[ninjaboy28]

gotcha-i think now im going with a sealed room -remo from urban growers you tube talked me into it

 

[ninjaboy28]

well my sealed room idea isnt working out so i need help im thinking about trying to move the 14ft out of my roof -can this be done?

 

[ninjaboy28]

 

[Dr Dog]

lol

so why did the sealed room idea not work? I am very familiar with Remo, and know of what he teaches.

It is costly to set up, but makes it almost undetectable.

So what set up did you decide on

With 4 600. and 14 ft long. I would put a bulb every 3 feet, that will leave 2 feet on wall sides. also will approximately give you 2.5 feet to turn ducting upwards.

I do agree with the assessment on the Fan, you want something pretty big, like was suggested a 12 incher would suck the paint off the walls

 

[ninjaboy28]

still trying to figure out the best option i would still like to go sealed but not sure on how to do it
, no air being exchanged in the room -lights being cooled with air from outside the room then vented outside the room never mixing with air that is mixing with the plants?
my room is in a basement and i can only vent air through the roof about 14 ft up
i also plan on venting through pvc pipe -can that be done? i thinking 6"
do i still need to have ac with the lights being cooled ?
how do i vent the dirty/smelly ac hot air if its a sealed room?
any help here would be great!!

 

[Lazyman]

Hey man, I'll throw in my $.02. No you shouldn't use PVC pipe, 8" is expensive and heavy, and isn't designed as ductwork. Home depot sells boxes of insulated flexible ducting, sheetmetal ducts, vents, tees wyes and elbows, everything you'd need.

Optimum way to aircool light hoods is to pull in air from outside the building, through the lights, and back outside somewhere else. The air in the ducts should never touch your grow room air, the only thing you want going out is heat.

Sealed rooms require some type of air conditioning, and dehumidifiers and a well-sealed room to keep all the cool, dry air inside. No "room" exhaust is sent outside. Carbon charcoal filters scrub the air in the room over and over, so the whole room stays sealed, odorless and cool. This is really the only good way to use CO2, but that's another thread. Air cooling hoods will remove about 50% of their heat, maybe a bit more if you insulate your hoods and all your ductwork.

I agree with the fan sizing fvk and Dog mentioned above.

Does your basement touch any windows, vents, or a chimney?

Ozone is best to use in a sort of "lung room" such as an attic or airlock, where air is treated for at least 30 seconds with ozone before it's sent outside. My airlock isn't vented so I use it to make sure the only smell that you get when you open the door is ozone.

BTW, with 4X600's, you can light 81 square feet with 50wpsf. Keep the plants under 2' before you flip them to flower or you'll have lots of tall plants and popcorn buds on the bottom half.

What kind of system are you going to use for your plants?

 

[ninjaboy28]

layzyman thanks for taking a look.
the reason for the pvc pipe is that i have to vent trough a comercial space before reaching the roof for a stealth and completly sealed vent to a hood on the roof. is the flexable ductwork sturdy and completly airtight? (its that silver stuff right?)

my room is completly sealed cauked everywhere and plastic in between the sheet rock. the room is actually a room within a basement space.

i have a portable ac unit i think would cool the space but that is the reason for the pvc pipe. i need to vent that exhaust air somewhere right ? and im guesing its going to smell.
i cant use a split ac system because i have NOWHERE to put the compresser.

im currently running a flood and drain system but im planing on going with ebb and flow buckets because of the 7' height issue. thnaks again for the help

 

[Dr Dog]

finding 6 inch pvc wont be all that easy, that is like sewer main sized.

As lazyman has said, Home depot stocks flex ducting, I think up to 5 inch, but you can order more.

in a sealed room, you need a air exchanger. Not just an ac, but something that will scrub the undesirables out of your air. Thus C02 is used frequently with sealed rooms.

 

[ninjaboy28]

hi dr dog. ok i plan on running a carbon filter in the room -is that an air exchanger or something different ?

 

[ninjaboy28]

 

[Dr Dog]

not the same

Check out this link, here is what they look like and what they do
http://www.vanee.ca/res-air-exchangers.php

 

[CranAppleGemz]

hmmm

 

[ninjaboy28]

ok thanks for the info-they are expensive right? have one that u recommend?

 

[CranAppleGemz]

Hey Dr Dog, ....question...

would i need to turn off the A/C and the Carbon filter fan off while c02 tank releases the c02 for the plants?

 

[Dr Dog]

well you really should not have a carbon filter in there with a sealed room

Your ac should not make much difference, but it would be alot more effiecient if your ac was off

If you look at how the plant uses C02, it kind of sucks it in around the leaf area, so you want to allow the plant to use as much as possible.

using a filter it will just get all sucked into your ducting

 

[Dr Dog]

ok thanks for the info-they are expensive right? have one that u recommend?

LOL I wish. My room is way too big to be sealing..2100 sq ft would be very difficult to seal completely. thus I dont use c02 either

What I do have is a professional fighter that trains in my room(seriously) he exhales c02 in a high oxygen environment, win/ win for both of them.