JB's cheapo diy large capacity ultrasonic humidifier

Discussion in 'Grow Room Design & Setup' started by JSB99, Jan 9, 2018.

  1.  
    JSB99

    JSB99 Well-Known Member

    I've built a few of these in the past as an alternative to store bought ultrasonic humidifiers. Even the smallest capacity models are around $35 - $50, but you can build your own, for way less, and with larger capacity reservoirs than most of them.

    For those who aren't familiar with ultrasonic humidifiers, aka "ultrasonic foggers", "nebulizers", "atomizers" or "cool-mist humidifiers", they are a great way to add humidity to a grow, without adding heat. I'm not going to go into how they work. There's plenty of info out there. I just want to show an alternative method. There are other tutorials out there, but I don't recall seeing one set up like this. So here we go...

    This is what it looks like
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    Parts:. Nebulizer w/power supply (Amazon, $12), tall, thick plastic cup, pet water bowl with reservoir (this one's 2.5-gallons, but they go up to 5-gallons), and a small aquarium pump. The pet water bowl is the perfect depth for the nebulizer to create fog, and will last a really long time. The nebulizer creates a lot of water droplets that will get everything wet, so the tall cup contains any spray. The aquarium pump is to jet the fog out of the cup. The very smallest will do. You can also use a fan and draw the fog out. Either would probably do fine.
    20180109_132547-1834x1683.jpg

    Pic of the nebulizer. Using these instead of store bought humidifiers allows you to replace the discs for real cheap, or even the entire nebulizer for as little as $6.99! It's way less expensive than having to buy a new ultrasonic humidifier!

    20180109_132619-1743x1283.jpg

    Drill a 1/4" hole a couple inches below the rim, then cut the cup from the rim to the hole. This is to hold the power cord, and the nebulizer in place. You want to use a thick cup so it's less prone to cracking, and it helps weigh it down in the water.
    20180109_132702-1536x2000.jpg

    Drill three more holes around the cup, but this time, only an inch from the rim. These holes allow the water to get to the nebulizer.
    20180109_132805-1210x1478.jpg

    Next, drill small holes towards the base of the cup. These are where the fog will jet from. You can drill them around the entire cup, or on one side, like mine, to jet the fog in a single direction. Experiment, and see what works best for you. These holes should be much smaller than the previous holes though, otherwise droplets will spray out and you'll end up with a wet mess. I used a 9/64" bit for these.

    Also drill a 1/4" hole in the center for the air line.

    20180109_132837-1604x1929.jpg


    Thread the nebulizer cord through the hole. You don't need to give the nebulizer cord any slack on the inside. As long as the nebulizer is upright.
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    Now just put the air line into the hole, and plug everything in.
    20180109_132934-2115x1654.jpg

    Use the air limiter to adjust the amount of fog. If your pump didn't come with one, your local hydro store should have them for a quarter or so.
    20180109_133002-1264x1145.jpg





     
    Last edited: Jan 9, 2018
  2.  
    JSB99

    JSB99 Well-Known Member

    Air pressure on high
    20180109_133103-1802x1789.jpg

    Air pressure on low
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    In my closet
    20180109_133237-1543x1703.jpg

    The fog is hard to see with he light, as well as my fan blowing it towards the plants
    20180109_133327-2191x1684.jpg
    20180109_133404-2156x1051.jpg
     
  3.  
    1212ham

    1212ham Well-Known Member

    Interesting. I ordered a couple of the neutralizers to play with. What happens when you put them in the the pot, LOL
     
    HookahsGarden likes this.
  4.  
    Tyleb173rd

    Tyleb173rd Well-Known Member

    I’ve been looking at these to increase my humidity in my 5x5 grow tent. The humidifier I have now isn’t doing the trick.
     
  5.  
    JSB99

    JSB99 Well-Known Member

    These work great! There are larger nebulizers, and multi-disc nebulizers available as well. I can raise the humidity in my 2x4x9 mother's closet, 30% or more, and I saw immediate results in my plants. They also help drop the temps a little too.
     
    Tyleb173rd likes this.
  6.  
    1212ham

    1212ham Well-Known Member

  7.  
    Roger A. Shrubber

    Roger A. Shrubber Well-Known Member

    JSB99 and 1212ham like this.
  8.  
    JSB99

    JSB99 Well-Known Member

    Update:

    The fogger has been running for over a week on the same reservoir fill! I'm starting to think breezing the plants with fog, and keeping the rh between 55% and 60% is attributing to the great growth I'm seeing in my sprouts.

    20180117_134249-2448x1836.jpg 20180117_113219-2365x1408.jpg 20180117_113145-2227x1568.jpg
     
  9.  
    Chrisz0825

    Chrisz0825 Active Member

    Can you give me the link of the nebulizer you're using? I looked on Amazon but im not seeing anything that looks even remotely close to what you have
     
  10.  
    JSB99

    JSB99 Well-Known Member

    You bet!

    Ultrasonic fogger
     
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  11.  
    Cold$moke

    Cold$moke Well-Known Member

    Siick nice work jsb99

    Whats the heat mats do? Besides heat duh but what does it help with?

    This is cool cause im making a crazy little hybrid system

    And was thinking how i could incorporate a nebulizer as a root fogger.
     
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  12.  
    JSB99

    JSB99 Well-Known Member

    The mat isn't actually doing anything. It was just sitting there, but I've removed it since, to avoid confusion :)
     
    Cold$moke likes this.
  13.  
    JSB99

    JSB99 Well-Known Member

    BTW, if you're going to grow via fogponics, you have to use special nebulizers. The ceramic discs that these use will immediately crud up and stop working from salt buildup, from the nutes. But, I'm pretty sure the concept of "fogponics" has been abandoned. Apparently, the ultrasonic vibrations break down and destroy the microbes, and the plant starves. You can use them in cloners though. I've seen pics of really fine hairs developing from taproots, with fogponics. I'd be interested to see how well they work with rooting clones.
     
    Cold$moke likes this.
  14.  
    JSB99

    JSB99 Well-Known Member

    Just to let everyone know, the nebulizer used in my fogger has LED lights. I didn't order the one with the lights for any reason at all. It was just a cheap one I found. However, you can get them without the lights. I don't run my fogger during lights-out, so the lights don't interfere at all. It actually looks kind of cool with the LEDs, even though they don't show through the cup much.

    Nebulizer without LEDs
     
    Last edited: Jan 19, 2018
  15.  
    Chrisz0825

    Chrisz0825 Active Member

    Thanks a lot! This is such a great idea and can't wait to try it out!
     
    JSB99 likes this.
  16.  
    Cold$moke

    Cold$moke Well-Known Member

    Thanks for the heads up.

    Yea the fog was just a add on to what im building just didnt want to buy the expesive fog unit lol
     
    JSB99 likes this.
  17.  
    whitebb2727

    whitebb2727 Well-Known Member

    I like it. I need one big enough for my whole house. Don't know the those would work for that though.
     
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  18.  
    JSB99

    JSB99 Well-Known Member

    LOL! You might want to go with a 12-disc nebulizer, like this. :)
     
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  19.  
    whitebb2727

    whitebb2727 Well-Known Member

    Lol. 180 bucks though.
     
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  20.  
    Cold$moke

    Cold$moke Well-Known Member

    Yea but youll be moist lmao
     

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