Need fan recommendations for my cooltube cab

[big twinn]

Im in the process of ordering a 150w HPS....i need recommendations on the BEST/Quietest fan to use for my DIY cool tube design. the requirements:
Quiet
powerful enough to cool 150w hps + (a possible additional 220w PLL)
can push through a carbon filter
will cool my cabinet the best and fit in a space (32in tall x 22in wide x 20in deep)

cool tube design:
https://www.icmag.com/ic/showthread.php?t=62161
cabinet:

 

[simos]

A little 4" inline should do the trick, I think.

If you're worried about the sound level, make sure you mount it with some padding or in a manner that reduces vibration, as that seems to be the root of much of the noise.

 

[Rouge]

mmmmm..... A S&P TD150 should do the trick> Anything in the neighborhood of 125cfm would be good. For 220 more watts, I'm guessing you need a 250 cfm to cool and scrub everything. So a TD250 would be good or a Delta AFB1212 for much less coins (& more noise) but ya gonna need a speed controller/voltage regulator with this. If ya going vertical, you could just stick the S&P in the bottom and put the cool tube on top of it and push thru the scrubber on the back of the cab. With 4 PLL's in the corners, I predict monster yeilds.....sweeeet.

 

[Baba Ku]

Do you plan on hanging a filter outside in back, with the fan in the box?
Can you exhaust out a window, under the floor, or up to the attic?
I ask these things because setting up with the fan pushing through things is not the best. It can cause odor issues if there is the slightest leak of cab air...and there will be the slightest leak of cab air. Also, the system will be much more efficient if the fan is at the end of the run and pulling through everything.
Carbon filters (waste of time trying other methods) restrict air flow considerably and you need a fan with not only sufficient CFM but it needs to be strong and able to overcome resistance at its rating.
A $30 duct booster fan is rated at ~250CFM, but with the slightest bit of resistance and it is down to nill. Another fan, such as a S&P rated at 250CFM will be lightyears better.
I like to use Stanley (Lasko) fan DIY's w/6" ducts.

 

[DiscoBiscuit]

You could mount a Hydrofarm blower (95cfm or 180cfm) to the upper right-hand corner of the back panel. Scrubbers mount at a right angle so your fan and filter would be along the back wall. You could suck through the filter instead of push.

It's just a matter of whether you've got enough remaining ceiling space to center your lamp. You could hang the bulb vertical and do it no problem. A hood is what I'm wondering about.

I found one of those computer server axial fan/scrubber combos. But the damn thing is 8" diameter and way to big for your setup.

 

[big twinn]

thanks for you alls input! i ended up getting a 250watt hps to go in there...i currently have the 4 PLLs vertically on the alls in my other cab, and im just going to convert that into my mother cab. as far as that cab goes..harvesting my 16week mexican sativa...i had two, but the second turned up to be a male. both had extensive LST training...my male trained the best...91 tops! while the female had 31 colas. fortunately one was male, as i drastically would have out grown this cab...

any updates suggestions now that you now im just hanging a single 250 remote ballasted lamp with a DIY cool tube design...

thanks, merry christmas!

 

[big twinn]

bump

 

[Pyrosin]

i have a 70cfm bathroom fan cooling my 400w cooltube. another 70cfm with fan speed control and a carbon scrubber on it for the cab. 50cfm bathroom fan for intake. bathroom fan i rigged with a 4-6 inch reducer on the intake side, then sealed around the reducer to make that fan into a sealed blower. it will pull/push air great and a cheap 70cfm bathroom fan is 25 bucks at lowes and around 5 for the reducer.

 

[DiscoBiscuit]

Sorry, bt. You're playing the more light game and you have to play more air-flow too. Your system is only as good as your weakest link. Right now, that looks like too small a cabinet. Or too big on the lamp.

Even if you get everything you want (an internal air system that pulls air through the filter) you'll have less room for plants.

With an external air system, your cab will look like R2D2 and quite possibly sound like a 747 with a fan big enough for a 250wHPS in a cab that small.

IMO, you can grow more weed with 50wpsf HID, a proper sized fan and scrubber and enough grow space to meet your harvest demands.

You found a cab. It's a nice one. Now you're trying to assemble your goal around that cab. It's sized for a 150 but evidently you're wanting more harvest than you assume you'll get from a 150.

You can build a COBRA. But the technology necessary to get that much power under the hood is advanced. Everything else from bumper to bumper has to be advanced to handle 428 ci in a 2000 pound car.

If you want to flower in that cab, you might consider a 150hps.

If you want to keep the 250, consider a 2' x 2' x 4' grow space. A grow tent that size is already setup for lamp and air system. All you have to do is mount your stuff.

 

[Pyrosin]

db my cab is 3' wide 21" deep and i have 400w hps in a cooltube, 2 54w t5ho, 4 23w cfl and 2 27w cfl. my cab doesnt go above 83, usually its around 80. 70cfm on cooltube, 70cfm exhaust, 50 cfm intake. no reason you cant put 250w in that cab vertically hanging in the middle. all of my fans, and the scrubber are outside the cab.

 

[DiscoBiscuit]

Correct. I didn't say he couldn't do it. bt's got 32" headroom, that doesn't leave much room for plants and equipment above, unless bt compensates. One way would be an external air system, another might be scrog-type grows.

BTW, you didn't mention height. That could be the difference between a project and a difficult one.

Let's see, 400 / (36 x 21) / 144) = ~76wpsf. bt would have more heat and radiation (in a smaller cab) than your setup. He might have to compensate. One way would be to increase distance between lamp and canopy. With 32" headroom, this option is limited and the inverse square law works against. Another way... bigger fan/ possibly louder. Speed controllers are pretty cool, less noise.

Ever seen "Tommy Boy"?

"Fat guy in a little coat" ... rip

Sometimes it's not so much what's stuffed inside, it's the limited container space. Above 50wpsf is great if the system has enough airflow to compensate. Otherwise, the inverse square law negates effectiveness when lamp is distanced from canopy. (this can be considerable) In addition, a 250hps with less caliber air-flow diminishes extra return at full operational cost.

That's why I suggested the beefy air-system. bt has previously mentioned he doesn't prefer external air so options are tight.

Getting tips from growers is great, keeps us from having to search for everything under the sun at IC. But your growing environment needs to be as worry-free as possible. Many peeps relate what works for them and sometimes the specifics aren't similar enough to meet particular expectations.

That's why I'm a little reluctant to say what will and won't work in extenuated circumstances. The bottom line is you CAN make it work. But does it compromise necessity? If you're lucky enough to get that worked out beforehand (as much as possible) it's downhill racing from there.

I recon a few of us get exactly what we want the first time around. Otherwise, the nature of the business means many of us have to reinvent the wheel. I know, I did. But IC is full of posts that demonstrate what works and what doesn't. Starting a tip thread gets needles and some hay. Searching like threads provide more targeted info (but it takes longer.)

bt, best wishes and hope the cab works out.

 

[big twinn]

i will keep you all updated...thanks for all the input!! i may have to add a stealthy top section to the cab (ie: a rubber made resting on top to contain all the fan/filter assembly...this would also reduce noise...im thinking this may be the best route given my circumstance...i picked the 250 for when i upgrade setups upon moving this summer

 

[big twinn]

Disco Biscuit: Any suggestions??
https://www.icmag.com/ic/showthread.php?t=200753