How to push out sucked in mylar tent walls?

GreenLogician said:

Agreed, Bamboofarmer and Antgotaclue above recommended an active intake and passive exhaust to push out walls, but the downside to that is air coming uncontrolled out of all the leaks in your room. It's not appropriate if you want to control your smell, like using a carbon filter.

I push my walls out physically, with concave bracing, not with positive air pressure

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drill a hole and mount with a zip tie...easy as pie..for further sturdy Ness go with ferring strip at a lowes of home depot

GreenLogician said:

Agreed, Bamboofarmer and Antgotaclue above recommended an active intake and passive exhaust to push out walls, but the downside to that is air coming uncontrolled out of all the leaks in your room. It's not appropriate if you want to control your smell, like using a carbon filter.

I push my walls out physically, with concave bracing, not with positive air pressure

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I suppose that's true, but if you tune everything just right, almost no air at all will escape the tent. I don't balloon the walls out, just keep them nice and relaxed. I actually have an active intake and exhaust, but use only one fan to do it.

I agree with you op...keep a slight negative pressure..any thing else air will be escaping and so will smell.. no such thing as a tottaly air tight opp......

Bamboofarmer, how do you do an active intake and exhaust of the same tent, with a single fan, without just recirculating the same air?
The only way I've met those criteria is when the exhaust fan from one tent blew into the intake for another.

GreenLogician said:

Bamboofarmer, how do you do an active intake and exhaust of the same tent, with a single fan, without just recirculating the same air?
The only way I've met those criteria is when the exhaust fan from one tent blew into the intake for another.

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Sounds like you know what I mean. Yes there is some exhaust circulated, but temp in tent is still easily maintained as long as I'm bringing in cold air from outside.

Hey guys. First post here. Been browsing for years. I usualy keep to myself when it comes to growing, but... I too have had problems with walls sucking in for years now and have tried everything from coat hangers, string, duct tape, Velcro. The other day I was grabbing some ff soil from the hardware store and ran into these(pic #1) Some kinda conduit holding clips. Was found in the electrical section. Lightbulb! They looked like they'd clip perfectly to tent poles.. So I bought two to test out. They fit. So I bought 6 more. For a total of $4. I used 3/16 steel rods that I had laying around. U could use 1/8" or 1/4" or anywhere in between. Depending on tent size this could run anywhere from $20 to a bunch. I just happened to have some that fit perfectly. I cut the rods to about 1" longer then width of tent. Bowed a little. So when u clip them on they will bow outwards like 4-5". This not only held my walls from caving in but placed in the right spot gave me MORE grow space in my little 4x2 tent. Although 48"x24" at the bottom and top, my "canopy space" has increased to around 56" and 30" at center. U can also moved them up and down. Add more. Remove them in 5 seconds if needed.. I am stoked about this and just thought I'd share my recent discovery.

Wow man, awesome!
The same path of discovery I've started down with the coat hangers, but an evolution further; modular!

Wow! Check these out! Must be fairly new... They don't bow out like my setup but should be what every one with this problem is looking for, "gorilla high cfm" tent wall supports. Never seen them till just now...

Cool!
Needs to bow out, but the industry is at least catching up!

I found somethimg but it can only b preordered for know. And they can ship worldwide which is good
Www.Extendogrow.com
Hope this helps for everyone

GreenLogician said:

Wow man, awesome!
The same path of discovery I've started down with the coat hangers, but an evolution further; modular!

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No need for coat hangers dude.
Check out this site www.extendogrow.com

my local shop been telling me about that product encouraging me to buy it he thinks its brilliant. i pre ordered it yesterday i got 2 packs for my 1.2 x 1.2m tent. i found this pic on a site.

Daaaaamn the world is on to it! Modular AND extendable.
And here I thought I was inventing stuff

I used curtain rods. They are expandable to fit whatever size, and the ends are pre-bent and easy to bend the rest of the way to fit around existing tent structure. They are pretty sturdy, enough to keep my tent from sucking in much. They were $8.50 at the hardware store for two that fit my 48x80". I'll have to get one more set to complete 3 sides.

Jonstipated said:

I used curtain rods. They are expandable to fit whatever size, and the ends are pre-bent and easy to bend the rest of the way to fit around existing tent structure. They are pretty sturdy, enough to keep my tent from sucking in much. They were $8.50 at the hardware store for two that fit my 48x80". I'll have to get one more set to complete 3 sides.

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theres loads of ways to diy to stop caving walls but that expando pushes the walls OUT. if you read the benefits of it its unbelievable, makes sense. people like me spend loads of money creating a better environment for my plants to gain more yield and better finish. its products like this that genuinely work. based on logic, more space, more light space, better airflow, read the benefits its endless. plus it looks pretty in my tent

GoHardGrowHard said:

theres loads of ways to diy to stop caving walls but that expando pushes the walls OUT. if you read the benefits of it its unbelievable, makes sense. people like me spend loads of money creating a better environment for my plants to gain more yield and better finish. its products like this that genuinely work. based on logic, more space, more light space, better airflow, read the benefits its endless. plus it looks pretty in my tent

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That's good I'm glad you are happy with them. However due to space constraints some people would rather not have their tent bowing outwards. Can you put them horizontally and vertically? I was simply sharing my successful method for keeping my tent in its original shape, which genuinely works based on logic.

Jonstipated said:

That's good I'm glad you are happy with them. However due to space constraints some people would rather not have their tent bowing outwards. Can you put them horizontally and vertically? I was simply sharing my successful method for keeping my tent in its original shape, which genuinely works based on logic.

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i understand dude we all had to do diy at sometime. but you can control how much you push out with it too. whatever works for you i guess. happy farming!

GoHardGrowHard said:

i understand dude we all had to do diy at sometime. but you can control how much you push out with it too. whatever works for you i guess. happy farming!

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Hey if they had these right by the curtain rods I would have definitely bought them instead!

These don't make much sense to me, financially. That says 2 per side, so it'd cost just as much to fully equip a 4×4 tent with these as what you'd paid for one. If you have a smaller tent than a 4x4, just get a larger one with that $$$, BAM more space, rather than trying to doctor a poor situation. Plus you'll have your old tent as a spare.

If you have a big tent, just make some for a few bucks. Get 2 pieces of pvc that slide in each other, some T and 90° fittings to make's the end brackets, cut a piece of pipe in half to make the ends that rest on the poles, some set screws or clamps. You could build a whole tents worth of those for the price of 1, maybe 1 1/2 of those..... and not wait until April.