how keep tent from collapsing from pressure

[Splinter7]

what is the best way to deal with this?

my out take fan is pretty strong and needs to be to keep a negative pressure on the tent.
however, it pulls the tent inward so much that the plants a a bit squished.
i saw in some posts people using plastic hangers to keep the tent from collapsing inward, but when i try that the hangers just break, or move around.
in the past, different setup, i had a pvc tube i would put across tent to keep part of it from collapsing.

 

[lusidghost]

Open up a portal a little? There's really no way to completely prevent it from sucking in.

 

[Splinter7]

Open up a portal a little? There's really no way to completely prevent it from sucking in.

i have an intake fan to boost the inflow of air. the tent and room i am in is a bit constraining....i can't really open any vents much more without having light pollution. i saw a solution elsewhere to make a pvc rectangle and hang it from the top about mid height to keep it pushed outward.

 

[FirstCavApache64]

I used to have 1" wooden dowel rods with holes drilled in them I would zip tie to the supports of the tents to stop the sides from getting sucked in. You can clip fans on them too. I took it out when I was doing a lot of scrog style growing and just never put it back in. It's cheap and easy to put in.

 

[1dude1seed]

You can build a skeleton in the tent. Kinda like the poles, but reinforced better with wood.

Or use pvc. I’ve only seen a few people use wood. Sorry, I don’t have pictures to show.

I’ve never needed to do either, just sharing information that I’ve seen.

Something like this can be used, then painted if wanted/needed:

 

[PopAndSonGrows]

What worked for me was opening the lower velcro flap on the "dark side" of my tent that gets no light when i turn the lamp on in that room. It's reduced my RH too.

 

[V256.420]

Gorilla sells High CFM kits in 5 different sizes but are made for their tents. Basically 4 poles the same length with a clasp on each end that "wraps" around the vertical tent poles of your tent.

If your tent has the same pole thickness and same width they might work.

Click HERE

They have 2 types of pole thickness. One for their LITE line and a thicker one for their regular line. 19mm for the reg line and 16mm for the Lite line

 

[Takbud]

Put a intake fan on the bottom with a fabric filter works great for me

 

[xtsho]

Turn the fan down. What size is the tent and fan?

 

[jondamon]

Turn the fan down. What size is the tent and fan?

Sensible

Personally I speed control my fan.

because in summer it needs to run pretty much 100% power but during winter that drops right down to Approx 20% power.

 

[Budz.Bunny]

I know gorilla grow tent makes these poles that fit on the inside it's like an extra pole in the middle

I'm actually seeing a guy use PVC before and he kind of bends it and it actually gives them a couple extra inches of room in his tent because it's pushing the walls out

 

[Budz.Bunny]

Its called a high CFM kit

 

[Star Dog]

I'd put a couple of feet of the largest diameter ducting the socks will take.

You'll need some sort of bug filter.

To stop light and smell coming out I use a square of black and white, even when the fan is is running they keep in light or stop it spilling out, when it's not running they keep in smell and light.

It's up to you how well it seals.

 

[blueberrymilkshake]

I tied Paracord from pole to pole. It did not help, don't be like me.

 

[Splinter7]

I tied Paracord from pole to pole. It did not help, don't be like me.

crap...i used bungies...and it didn't work perfectly. better, but not fixed

 

[PopAndSonGrows]

Be careful because those "crossbars" can put all the stress inward on the corners and cause a weak corner to collapse.

 

[blueberrymilkshake]

crap...i used bungies...and it didn't work perfectly. better, but not fixed

 

[green_machine_two9er]

It’s pretty simple. Increase negative intake openings. Million ways to open a path for air and filter/ lightproof at the same time

 

[Grojak]

You didn’t mention any intake fan so I’m assuming you’re not pulling in outside air. If that is the case there is a very simple and cheap solution that will not cause light pollutions. Take some leftover ducting (4”/ 6” either will work) cut about a 2-3ft piece and stick it in an opening, preferably on the bottom but it could be on the top. Key is to make it long enough that light won’t leak in.

This should off set the pressure just enough to solve you issue. It’ll still pull the tent in a bit but decrease it enough that you’re not squishing plants. . Outside of that a low cFm intake could be used

 

[HydroKid239]

8x 4ft bamboo sticks helped in my small tent. It still sucks in, but the bamboo evenly takes the pressure on so it's less stressful on the corners. I use electric tape on the ends of the sticks to avoid them cutting into the mylar. The ends will rub the mylar every time the tent is zipped back up & the walls suck in.
I also have a black colored vacuum extension hose lodged into the small port meant for cables most likely. I run it against the wall behind the tent with a sock on the end (Held by elastics) to prevent debris from getting sucked in.
in the end it helped, and only ran me $8 for a 24pk of sticks & $1 tape.