Flower Room Build

Ok guys, I need some advice and help making this a good fuctioning Flower Room. Attached is a picture of the place I will be building the area in.

The Dimensions are as follow:

Length = 4ft. 8in.
Height = 4ft. 4in.
Depth = 2ft. 8in.

There is a vent on the bottom left corner that is already screened in. I have been trying to figure out if I am going to use this for exhaust or intake for the grow room. I will sheet rock and make the ports for the 4" exhaust. Right now its 80 degree's in the garage. Outside temp is 70-75 high. And I am only using floro, wait till the HPS gets plugged in. So I am getting close to already too warm. So I might need to intake some outside air to the inside of the grow room to get temps down. But, I also want to be able to vent out the smell once these babies start budding up.I have also kicked in side my head, I could use the vent for both, but then it might recycle the smell and cool and hot air back in.

I don't mind a little bit of the smell in the garage, as my friends know I smoke. Its when other people come in the garage I don't want them to know. So this will be sort of a stealth operations. No one that I know will know about the growing side of this op.

What I want to do first is buy some sheet rock, and seal up the area. Then buy Mylar and line the inside with it. Next figure out some kind of door to cover the open area.


Then buy maybe 2 of these.

High Tech Garden Supply

Then since I have the Floralux 400 watt High Pressure Sodium (HPS) System, it already has the 4 in. Vent, Connect one for heat exhuast off the light, and maybe another one for heat on the other side, and just have a screen somewhere placed on the sheet rock of one side to bring in air from the garage instead of the vent from outside. I still have it all in the air as to what exact way to build this thing.

High Tech Garden Supply


What would you guys do? And is the height going to be enough, or should I knock out the top shelf and go higher for bigger yield. If so, its just going to make it harder to hide and build and more materials.

Update... Here is how it will work for now till the build starts. 2 4" Floros 24/0 on small fan.

thats how i started. and the are flowering but I use three of those 4 cool bulbs and two warm. you will be surprised

the 4" vent booster fan should be enough to cool the light but i would suggest at least one inline (not booster) fan blowing out (two would be better) with a passive non fan intake hole at the bottom of your cab. your space is too small for just the booster fans to effectivley vent the space especially since ambient temps in the garage are already high. heat rises so vent exhaust as high as possible. it would be worth it to spend a little extra cash on the inline instead of trying to use a vent booster fan for a purpose in which it was not intended. as for the height it should be fine just force the flower when the plants are 10-12" high. the plants will double in height. using cfls is fine but be wary of stretching the node length. plants under less than optimal light strtch and become spindly fast so keep the low output lights as close as possible to tops.

Beautiful. Well said. Thats the kind of info I need. Keep it coming!

That is what I am going to do. I think I have about 2-3 weeks till I need to put them under the 400 HPS light and start feeding Ferts. Good enough time to scrounge up some cash. Thanks bud! Very good idea!

So You want me to get 2 of these?
High Tech Garden Supply

And use them for heat ventalation exhuast?

And Use this for the cool air coming in?
High Tech Garden Supply

Or should I use the 8" and use a T fitting to 2 seperate 4" tubes?

And would you buy Mylar or something else from HD?

as far as mylar goes: one it is expensive. two it tears easily unless you get 4 or 6 mil and if you do buy 4 or 6 mil, see answer one. three if it gets water spots on it (which it will) it reduces reflectivity by a LOT. and four it is just a pain in the ass to use. i would suggest flat white paint. it is much cheaper. doesn't tear easily and it won't reduce its reflectivity if water spotted. and finally this is just my opinion it helps in reducing heat in small spaces to use flat white paint over mylar. but as i said there are people who will swear by the mylar. now about the fans a y splitter is more of a hassle than is really necessary. what we want to create is positive airflow. the inline fans you are showing are exactly the ones i use. i actually got the 4" and the filter package from the same place. (i like this store for prices). i stick with 4" fans simply because 4" tubing and accessories are commonly used for dryer venting and therefore available at most do it yourself places. that way i can buy all my tubing and such at HD instead of a specialized place. and i think it arouses less suspicion. i am paranoid though. a little more about your tubing. avoid at all costs making any 90 degree bends in your tubing. stick with 45 degrees or less. 90degree bends really fuck up airflow so i would stick with 45 degree bends or less. your ambient temps are high already in the garage. which imo you need outside air coming in so i would use that duct booster fan on that vent you have on the floor. just don't run very much tubing to this. keep that run short. since we have the hot as hell garage you can cut a 4" hole in the top (or two) and run these fans blowing out. filter then fan then tubing. secure this fan to the top using bungee cords on hooks from the ceiling. this will reduce vibration and simplify installation. it will only really stink in the last 6 weeks or so of flowering so i would not install the filter until then as the filter reduces output of fan by about 30%. and it would be good to remember that you need a light tight as well as air tight cab so use caulk on seams inside cab. if the 400 hps has a vented hood and the ballast is kept out of the room you should be able to maintain correct internal temps. wire the hood duct booster fan to the light timer as it doesn't need to run when the light is off. as always a good oscilating fan will to wonders for air movement and humidity control so up in the space wasted above lights mount an osc. fan to the wall. turn it to low or med because it will dry soil of young plants and if there is too much breeze it could wind burn plants. and just while i'm thinking of it i would stick with indica varieties as sativa strains grow much taller.

just went threw the buy the fan syndrom myself. was given some VERY good advice I followed. I will copy an paste what was said to me.
well you're not going to like what im about to tell you!


i only know of expensive fans. the reason i say that is because you get what you pay for.

i also need extreme stealthy situations. with that said, i only buy fans based on their quietness and efficiency. Fans can create alot of noise and if not labeled to be quiet or whisper quiet...you will hear it. I dont want my fans to be heard from the outside.

for quiet operations and efficiency i would only recommend

1. sunleaves windtunnel
2. elicent fans
3. vortex powerfans


and i've heard panasonic whisper quiet fans are quiet as hell, but they seem to get louder and louder over the years

I got the elicent.... it is QUIET!!! found mine on e-bay. very very pleased.
and you will want a carbon scrubber. there is a diy one on RIU. made mine.
Easy to Build DIY Carbon Filter - Marijuana Growing
International Cannagraphic Magazine Forums - DIY pro style carbon filter
made that as well. working GREAT!! the folks here really helped me a LOT when making my room. I followed there advice. what can I say. I just LOVE my little tropical oassis.
opps another little hint. if your tight on the pennies like I am.
drywall. and paint it flat white. { now don't giggle I got a LOT of my drywall dumpster diving} cost way less then mylar. and your going to find you need every cent you can get your hands on when making a room.

ah yes. should i use one fan or two venting out? well the 4" inline moves 170 cubic feet per minute. what we want is total air exchange every five minutes. so first get cubic feet of flowering cab and then see if one or two fans will suffice. remember that the filter will reduce that 170 cfm to roughly 110cfm or so. hope this helps abit.

One gallon of the white roof coating runs about $20, and is really reflective. I'm replacing my mylar with the coating.

woops you fellers.... ok he gets the fans the lights the ducts and the and the and the... your forgetting you have to PLUG it all in... and safty is a BIG issue... how is your electric? use only GFI Switches. and have a smoke detector around. like was said to me NOTHING more embarrassing then burning down the house and trying to explain to the nice fire / police man how or why the attic with all the crispy plants got that way.

copied from a page in my {the dream set up for a 1000 watt light}

you are absolutely correct, some things you just dont cut corners on. And IMO, you dont cut corners with safety, electricity, nutrients, lights, last but not least and most importantly good ventilation!!!!
That paragraph should be a sticky thread on the homepage,too many new growers cut way too many corners,its nice to see her doing it right.

I love my room and the best thanks I can offer those who helped me is to tell another what was said to me. take your time. do it right. be safe.

Great info guys. Thanks a ton.

I think for now, I'm going to get 1
GrowBright 4" Inline Fan

And 1

Suncourt 4" Inline Duct Fan

Then buy sheet rock, close all sides in, and paint white. Anything else?

i don't know what the above threads are talking about. it aint rocket science to wire it up to a power strip and not "burn your house down". but proper ventilation in a small space is rocket science! if you aint moving the air you aint growin plants. period. it is amazing how fast they'll die! Mrsmcgreggor is stepping on my buzz and wasting space talking about SAFETY when that isn't what the question was initially about.

I'd get this one over the growbright fan - heard they're kinda loud -
Valueline 4 Inch Centrifugal Inline Fan - Plantlighting Hydroponics

Also, I found the 4" Suncourt duct fan at Home Depot for about $25 inc. tax.

I was at Lowes yesterday and did not see an fans for ducts. I will have to look at HD and see what they have. Quite fans would be good though.

Ok guys, here is what I order and on its way.

1 x 4 inch Galvanized Steel Y Connector (200894-1) = $14.90
1 x Suncourt 4 Inch In-line Duct Booster Fan w/powercord (200900) = $29.90
1 x Clonex 100ml Cloning Gel (200719-1) = $17.90
1 x Valueline 4 Inch Centrifugal Inline Fan (500510-1) = $69.90

I decided I want 2 Exhuast mouths one on each side of the 400 HPS to pull heat out from both sides up top. Hence the Y 4" Fitting.

Then run the booster on the bottome vent. Outside the house, I will shade as much as possible where the vent is so I can get cooler air coming in.

Sheet rock should be up in about 4 days once I get some time.

Can I install the Inline exhuast fan ouside the box to pump out, vs having the moter inside the box? Should no matter too much right? Trying to have less objects inside the grow room as possible.

Also Orded some of this!!!!!!!!!
#1 Fertilizer Combo - FoxFarm Liquid Soil Formula

looks really good. this will work great. foxfarm is strong nutes dilute in the begining or suffer nute burn. foxfarm excellent and organic! keep us posted!