10' x 13' room setup smell and ventilation HELP

Welcome to my 10' x 13' room setup!

I just moved into a new place and am eager to get all setup!
First some background on the environment and space.
I come from a townhouse where I was growing on the first floor using 3 4x4 tents and loved it!

Here's a pic of of what it used to look like and what I want it to look like again with the addition of a 4th tent!



The only difference between that photo and now is that I've replaced the 315 LEC light with a 1000 watt HPS light in a 6" vented hood.

This is a shot of how the new room looked upon me moving in. It's 10' x 13' x 9' high. PERFECT!


In this photo you can see the doorless entry and the central AC intake above it.


Here's the plans I made beforehnd to make sure everything fit and I had a foot of clearance on each side of the tents so I can get to the back for pruning.
I also made plans so once I can afford it I can add a 4th tent without too much hassle.


This is what the room looks like now and once I unpacked everything.


This photo shows the exhaust system of the window I framed. I have a piece of ducting closing the bottom port for testing purposes and will be covering up any air leaks with foil tape. The top port is for exhaust and the bottom port was initially for intake, however I learned as a good student always does that these ports are too close together and the bottom port only pulls the hot air from the lights back through it and into the room.


This picture shows my initial plans of how I wanted the intake to work, with the fan pulling fresh air from outside using the bottom port of the window.
This top view of the tents shows me putting one continuous tube of ducting through the bottom of the tents and poking holes in it for airflow.
Because the exhaust port is so close to the intake port I need to figure something else out because it's pushing hot air right back into the room unless I cover it until the environment is dialed in.


This is a quick sketch of how my lighting is setup right now. I need to work on this because I have temps that exceed 100 degrees.
For easy reference of this article we will refer to these tents as tent 1, tent 2, and tent 3 in order from left to right.


In this photo it shows my smell elimination system. I bought 3 4" fans, speed controllers, and 200 cfm scrubbers from amazon with the hopes that I can have one scrubber in each tent scrubbing the smell at the source. This way I have to only pop out and replace each scrubber after every harvest!
I herniated the same disk in my back twice within the past year so having equipment I can carry easily is a must for me.


Here's a picture of the door I designed for the doorless entry to the next room where I sleep.
Weighs but 5 pounds and can stick to the wall with velcro, Thank the universe for velcro. THANK IT! lol


And then look at the door when it's on the wall in all it's glory. LOOK AT IT!


So this is where I'm at currently.
I need help with 2 things:
1: smell proofing this room
2: getting temps down

The problem I have with the smell system is middle tent is currently pushing air into the tent from the exhaust of the first tent. The other two tents have negative pressure.

What I've tried so far:
* turning the speed controller up on the fan in tent 1 and the speed controller down in tent 3
* exchanged the T's that go on top of the two big tents out for wye's, theres still tons of pressure coming into the second tent.

The problem I have with temps is the tents get to 106 degrees within 30 minutes.

What I've tried so far:
* keeping the central AC unit to 60 degrees
* turning up the speed controller on the 8" fan in the 1st tent to full
* opened the bottom ports of each tent for passive intake
* closed off bottom port of framed window to prevent hot air from coming back into the room.

How can I get this dialed in?
I will be posting this on several sites to get the most feedback.
I've already contacted 2 consultants in Denver with no success.
Every day the lights aren't on I lose money.
I'm sure you guys know the struggle.
Any help would be greatly appreciated!

Since my initial post I have had someone come over to help and we decided on changing to turn the fan around in tent 1 and change the ducting from the exhaust to the intake. This will pull fresh air in through the lights and create a loop that exhausts from the room. I also learned it takes roughly 200 CFM for a 1k HPS bulb to be cooled. These active air fans SAY they pull >700 CFM but in reality it's about 500. So my logic is, if I have 2 fans pulling 500 REAL CFM's each through 3 1k lights that should be more than enough to cool it, which also compensates for the 90 degree angle's. I also raised each light to be more inline to facilitate least resistance and maximum airflow. AND I replaced the insulated ducting with standard ducting. Back started hurting at this point so I waiting til sundown and decided to fire it all up! Before You hear the results look at the pictures. I may start exploring my photography side...

Here's what it looks like now:

Here's a photo of the situation in tent 1 with the fan turned around:

My new obstacle is that I have a lot of suction from the outside and want to find a way to:
1: make this look more discreet and,
2: reclaim the lost CFM

Here's what it looks like from the outside:



Ready for the results?

Before the changes the temps 1 hour after the lights turned on were:

Tent 1: 101
Tent 2: 106
Tent 3: 107

After the changes the temps 1 hour after the lights turned on are:

Tent 1: 101
Tent 2: 101
Tent 3: 103

What's my next move?
I'm glad you asked.
I plan on getting a window unit AC and cutting a hole in the window board to install it.
Once installed I'll build a manifold that directs the cold air into the bottom of each tent through ducting with holes poked in it. Picture the intake from my initial post and instead of the fan there's a window unit.

I take all feedback as a gift and welcome it openly!
Help me become successful and we'll ALL gain knowledge from this!

Comments?
Suggestions?
Links to other people's setups that relate?
Pictures of AC manifolds?

If I'm understanding what you have done correctly you have all 3 extraction ducts connected to that box?
If so then your fans are been limited by the size of the box at the out point and limited by going into a Y piece in two points and trying to force all that into one point of the Y of the same size.
The ducting connecting all tents seems to be around the same size.
Increase the size of the ducting, increase the fans and extractors. If you cant afford to increase those then double up in your tents and run one less for now.

I would run the cooling straight to window, use a filter on intake of cooling. Run all your main extraction and filters into a double sized or bigger duct ( if fans are 6" use 12")and increase the size of the window box. Forget about using that window to intake and use you tents passive vents and your ac to bring air in(to the room). You may have to build a unit around your door with a light trap so that more air can be brought in through there. Smell wont go out that way as long as there is negative pressure in the room as a whole and there will be with all that extraction and passive intake. That way you have two point of air in, the ac and the door to rest of flat. Plus only one place for out take, the window.

I would be running 6" fans and filters at least with a 1000w in a tent. I use a 5" for my 400w veg tent and I live in dull and cold Europe.



For the extraction duct you will need reducers to go from 6" to 12" X3 and 2X T piece.
You will have to have the box on the window with 12" hole and hole for whatever the cooled hoods duct size in, the window exit must be greater than both those added together. You cant cram all that air through a small space because it will over work your fans and cause them to run hotter than necessary.
I hope I am making sense and I hope I understood what you were doing.

coreywebster said:

If I'm understanding what you have done correctly you have all 3 extraction ducts connected to that box?
If so then your fans are been limited by the size of the box at the out point and limited by going into a Y piece in two points and trying to force all that into one point of the Y of the same size.
The ducting connecting all tents seems to be around the same size.
Increase the size of the ducting, increase the fans and extractors. If you cant afford to increase those then double up in your tents and run one less for now.

I would run the cooling straight to window, use a filter on intake of cooling. Run all your main extraction and filters into a double sized or bigger duct ( if fans are 6" use 12")and increase the size of the window box. Forget about using that window to intake and use you tents passive vents and your ac to bring air in(to the room). You may have to build a unit around your door with a light trap so that more air can be brought in through there. Smell wont go out that way as long as there is negative pressure in the room as a whole and there will be with all that extraction and passive intake. That way you have two point of air in, the ac and the door to rest of flat. Plus only one place for out take, the window.

I would be running 6" fans and filters at least with a 1000w in a tent. I use a 5" for my 400w veg tent and I live in dull and cold Europe.
View attachment 3769318


For the extraction duct you will need reducers to go from 6" to 12" X3 and 2X T piece.
You will have to have the box on the window with 12" hole and hole for whatever the cooled hoods duct size in, the window exit must be greater than both those added together. You cant cram all that air through a small space because it will over work your fans and cause them to run hotter than necessary.
I hope I am making sense and I hope I understood what you were doing.

Click to expand...

Hey Corey,

I'm hearing what you're saying and you're hearing what I'm saying, check!

I like your idea of the light trap, that will make it to my to do list immediately.
What could we do if we couldn't buy more fans and we had to use the 4 in fans and scrubbers that were already purchased and can't be returned?
If I'm hearing you correctly the exhaust on the smell system is 4" and the exhaust on the lights is 8" so we need to make at least a 12 inch hole on the window board with the AC underneath that with no manifold.
Do I have that right?

Thanks for your response bro, the only one to help me thus far.

If you have to deal with 4 inch fans for extraction then I think your going to have to cut down two 2 tents until you can get some money in. You could try and go with it for now, I suspect its just not enough though. However you should see a lower temp over all without the intake pulling in air from the same window as the outtakes. I would imagine the intake is just pulling the hot air back into the room.
As for the ducting size, what I mean is you have 3x 4" fans going into one duct so that duct must be big so there is little resistance. If that duct is not massive, most importantly at the extraction point in the window box then its probably too much pressure to push through as those fans wont like long ducts and can only take so much pressure. Seems to me they would be performing at less that best. So yeah I would have very big ducting going to the window which is fed by the 3 smaller ducts, you could also have the light cooling duct running into it and jut have a larger hole in the window box as long as you have a filter on the end
Its a difficult one to be honest, you have what you have. I think the best thing would be to get rid of the intake from the window and allow the whole room and tents to be passive.
I have never built a system as big as this so I'm going from a logic point of view. But I would of thought in your position all ideas are worth trying right now as you will still have all the same equipment if things don't improve.
I don't suppose your 1000w lights are dimmable?