1080w led room air problem

[kollos]

Hello people! I need some help from you and would be very thankfull for some help.

If i have a growing room about 3*6ft (2*1 meter)
And i are using LED lights and the temprature is good and i are happy with what it is nothing to care about.

Can you run the exhaust recirculating in the room with the carbon filters just to take the smell away from the area and skip the intake? just to keep the smell gone when i open the door

I know this is not optimal but would this work good anyway? I have fresh air when i open the door.

Can you guys help me out here what is my best options? i dont want to have a hard time go hardcore with CO2 and stuff.

My only other option is to have an exhaust in a secound room that is also sealed, but what happens with the room if i keep force air inside 24/7 and nothing goes out from the secoundary room?
Or is this perfectly fine ? the air is vanishing by itself in the room?

Any way i solve the exhaust problem, can i skip the intake ? i have a very hard time to use a intake if some electric problems so it smell or that the intake is visible.

Thanks alot for ya time helping me out.

 

[RonSmooth]

Yes but you would most likely need to supplement CO2 since you wouldn't be exchanging the air. The plants would use the CO2 and "exhale" oxygen. As the air circulates it contains less and less CO2 as the plants use it at a faster rate than it can be replenished.

It depends on how many plants, how large and healthy, more leaves equals more "breathing". Environmental details affect rate of transpiration, optimal conditions allow for optimum rates.

A simple and relatively inexpensive option might be those "exhale" bags. I haven't had a need but the reviews seem generally positive. I think they are ~$30-40.

 

[rives]

No. You are going to overheat very quickly with 1k+ in LEDs if you don't have airflow, and as Ron said, you need CO2.

 

[kollos]

Okey thanks alot guys for ur help.

I have a new suggestion. Can you help me if this is is possible!

I take a 4" pipe outlet as a passive intake, pipe will be around 3meter with no active fan that goes outside

And i will have 1 fan "rated 240 m3" in flower room that sucks air into a carbon filter and blows it out in the veg room, and one identical fan "rated 240 m3" that sucks up the air in the veg room and blow it out in a 4" pipeoutlet that goes outside.

Will this be any problems or is this a good way?

EXHAUST:
flower room>carbonfilter>fan>vegroom>carbonfilter>fan>4" pipe outside

INTAKE:
3meter pipe 4" into a 2way split so one 4" in veg and one continue to 4" flower.

Will this work guys? Please help me out

 

[rives]

You need a much larger inlet, or more of them. The rule of thumb for a passive inlet is to have double the area of the exhaust. In your question, the intake is split so the area is effectively cut in half rather than being doubled.

 

[kollos]

Okey yes i saw that point in the ventilation sticky and alittle other places.

But if the bloom room blows into the veg room, and the exhaust is 4", what is a good size of passive inlet? Wouldent 2 of 4" pipes work good? i cant have 3 big 4" in this room, its just inpossible.

i know that the 4" intake is cut in half by going to 2 rooms, but the fans are strong to the small size of the room also i guess. but that is bad for the negative pressure i assume then also if i understand correcly,

But does 2 4" intakes make it good? one to each room, 4" is a big whole my friend cant understand that its not enought

 

[kollos]

Thanks for helping me out with this im in a hurry and i have noone to turn to
Im Thankfull

 

[rives]

Ideally, you would want at least (2) of the 4" pipes as an inlet to each individual 4" outlet. Having a large fan on the outlet does very little to makeup for the inlet being too small - since the inlet is passive, only so much air can move through it. The fans will not "suck harder" and move the volume that the fans are rated for - they will cavitate and only move as much air as can freely flow through the inlet.

 

[kollos]

Remember also that the the bloom room blows into the veg room, This air must be some Procentage of "fresh air" ? to the veg room?

So its 1 4" intake to veg and 1 4" intake to bloom, But the bloom blows in constantly to the veg room, and the veg room have then 1 4" outtake with a fan.

Is this still bad?

 

[rives]

You'd have to try it and see how it works. I have my doubts.

If there is any imbalance in the fans, the fan that is in the bloom room can possibly blow out through the veg room inlet. If you are limited to the one exit point, then you might be better off installing a "Y" at the exit point and exhaust both fans through it rather than dumping the airflow from the bloom fan into the veg area.

If you are limited to those options, your airflow will be far from ideal and it will take some playing around to see what will function best for you.

 

[kollos]

Dosent the air from the bloom room that goes to the veg room count alittle as "intake air" also? because i guess alot of air it blows direcly back into the veg room.

Thats why my question to you is if u think (1) 4" outlet would be enought for (2) 4" intake one to each room.

 

[kollos]

Okey i understand you!

I just wanted to blow the bloom room into the veg room to make the air go tru one more carbon filter to be 110% of the smell that is going out is gone for sure.

But if i use (1) 4" intake to both rooms, and i make (1) 4" outlet with a Y from both veg and bloom room.

Then i follow ur rule about double intake vs outlet, the problem then is, is the outlet to small my friend ??

 

[rives]

Yes, it will count as intake air for the veg room. However, since the bloom room is limited on intake volume, the air flow in that room will be down from what it should be and the air that is getting into the veg room will already be pre-heated, pre-humidified, and had much of the CO2 used up. How much it will benefit the veg room is questionable.

 

[rives]

Yes to your last post. However, it would be pressurized by the fans and hopefully that will give you more latitude than working with the passive side.

 

[kollos]

Im sorry for my cross posts i cant find any edit button anywhere i search .

This is so hard to get toogether, if i use (1) 4" to each room, and split both rooms outlet into a Y 4" outlet then i can make this work, But if i add one more exhaust i need 2 more intake, thats (6) 4" inlets. This is so frustrating im going mental.

Are u sure that i cant use (1) 4" as a outlet from both rooms? what is it based on? the sizes of my fans ?

 

[kollos]

i can run the fans on low speed? its low or high function

 

[rives]

I'm not sure how you made the leap to (6) inlets.....

2 in for every 1 out of the same size is ideal. Anything less is going to take some experimentation to see what you can get away with if it will work at all. Dumping pressurized air into the veg room is asking to blow stinky air out of the passive inlet to the veg room. Taking both airflows to the the exit point is the best option that I see, and yes, it might require running the fans on low.

Perhaps you could dump the bloom air into the veg room if you run the bloom fan on low and the veg fan on high, but you are still going to be inlet-restricted.

 

[kollos]

I mean 6 total big holes in the wall, (4) inlet and (2) outlet, i was first set my mind on barley 2.

So now u have helped me to this point,
That i will now use (1) 4" inlet into each room.
And i will now take both veg and bloom room to an direct exit outlet.

But now the problem remains, Is the 4" exit outlet to small to handle both rooms with a Y split from the rooms.

If so, Why ? is this based on my fans? my size of my room?
What problems will accure if i dont push enough air out the (1) splitted exit?
How will i notice if the exit outlet is to small for both rooms?

 

[exploziv]

Do you know the model of the extractor fans you use? how much air can they move?
If the fans are made to be used with ducting no bigger than 4", it's ok. if they are made for bigger ducting, it may still work with fans on low, but not high.

 

[kollos]

Do you know the model of the extractor fans you use? how much air can they move?
If the fans are made to be used with ducting no bigger than 4", it's ok. if they are made for bigger ducting, it may still work with fans on low, but not high.

The fans name is TT125 it moves 220m3/h in low and 280m3/h in high. and its one in each room,

But i wonder if i can use both fans to (1) 4" exit, because then i can stick to (2) 4" inlets, and this i can do.
But i have no idea if (1) 4" is big enought as a outlet from both rooms? as i see it the room could be twice as big and then i would still only use (1) 4" exit. im confused about this last exit outlet size