Intake, Ducing with T, 2 Fans ..... good or bad idea??

Ok i am trying to make my intake help out both rooms.


I have a 6inch fresh air intake ducing that comes in under my veg room. Installed a Ducing T on the end, of it
Then on each side of the T i put a 105 cfm fan, one going to the Flower room, one going to Veg room

bump Rip

looks simple enough to me and effective!! I give it a yey!!

UNICRONLIVES said:

looks simple enough to me and effective!! I give it a yey!!

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I agree. Good luck

My own experiences tell me it is better to separate ducting whenever possible, as what is best in one room may not be best for the other. Also, I once had a setup like that to supply more air into a single room, rather than air to separate rooms. What happened was that one fan was a slightly higher cfm than the other or had less resistance and it made the other fan suck instead of blow (that's what she said?).

Air, like water, follows the path of least resistance. I would definitely make them separate for better control. Also, light from the veg layer could get into the flower layer during dark hours if not baffled correctly. But if you baffle it, air will have one path to go that is easier than the other and you would run into the problem I described above.

Just my stoned 2 cents, based on similarish experiences.

Looks possibly bad: You have 2 opposing fans both trying to draw 109cfm. They will start to build up negative pressure as they're pulling against each other, reducing their overall output.
A better approach might be to put a fan in the flower room pulling air from veg or just another fresh air intake. I'm just not sold on 2 opposing fans lasting any amount of time. Let me research it as my realtive is an HVAC type and has done this stuff for years.

dont do it! there is a good read on venting and pressure in a system,add-ons, ect...... its under FAQ.

thats funny cause i ran duct work for years and never seen 2 little 100cfm fans suck in so much air thru a 4-6 in. port that they actually fought each other for more air. and im guessin this room is not a negative pressurized room!! jus guessin though! let me edit this though!! not arguin with anyone but if its easy to do then your lookin at cost versus man hours! so.....at the least i think you could build a B.S. split down thcenter of the T..

After doing a trial run i believe this is a bad idea.

The negative pressure is one thing i was thinking would mess it up, and i believe it did. after hearing both fans going and then just one. When i do just have one fan on it makes the other fan spin backwards not sure thats a good thing either.

Now the idea is to just vent the fresh air into the Flower room and then make a intake for the veg from the flower to veg.

Hulk Nugs said:

After doing a trial run i believe this is a bad idea.

The negative pressure is one thing i was thinking would mess it up, and i believe it did. after hearing both fans going and then just one. When i do just have one fan on it makes the other fan spin backwards not sure thats a good thing either.

Now the idea is to just vent the fresh air into the Flower room and then make a intake for the veg from the flower to veg.

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Sounds like you have a good plan now!

+Rep sonn. Good plan B.
And maybe use the extra fan for exhaust?
Just my $.02

poofy95 said:

+Rep sonn. Good plan B.
And maybe use the extra fan for exhaust?
Just my $.02

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Thanks man back at you!!

plan B will have one fan105cfm for flowering room intake, then the other 105cfm will be for the veg intake.

but i have plenty of extra fans. after taking apart my old room witch i did 6 months ago, i have tons of extra, crazy you go bigger and you need less stuff to make it work, well in my situations it happened that way.