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Offlinefoodguy
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Registered: 01/05/17
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Humidification Trouble
    #25596796 - 11/06/18 05:24 PM (6 years, 2 months ago)

Working on dialing this greenhouse in while my bags are colonizing.

Bucket Here


The Humidification bucket consists of 1 single disc pond fogger and a 4inch 90cfm duct fan. I've had it running 24 hours now, and I'm still under 80% humidity. Is the fan to strong? Do I just need to get a bigger fogger? Maybe a 3 disc? Looking for advice here.

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InvisiblemushboyMDiscord
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Re: Humidification Trouble [Re: foodguy]
    #25596811 - 11/06/18 05:29 PM (6 years, 2 months ago)

What kind of mushrooms?

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OfflineVroomerMcZoomers
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Re: Humidification Trouble [Re: foodguy]
    #25596907 - 11/06/18 06:03 PM (6 years, 2 months ago)

I would go with a large output ultrasonic. 

One that can really make a thick cloud in there that can leave some residue, and put it on a cycle timer.


--------------------
 

Either you repeat the same conventional doctrines everybody is saying, or else you say something true, and it will sound like it's from Neptune.  -Noam Chomsky

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Offlinefoodguy
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Re: Humidification Trouble [Re: mushboy]
    #25596948 - 11/06/18 06:21 PM (6 years, 2 months ago)

I’ll have some Kings to start, but may throw a few trays of something fun in as well.

I have an ultrasonic in there now, but it’s a single disc.

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OfflineSHROOMSISAY01M
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Re: Humidification Trouble [Re: foodguy]
    #25597019 - 11/06/18 06:57 PM (6 years, 2 months ago)

I would try partially blocking the intake air with a board 1st. 90 CFM is too much for that tent. That high of CFM will make the fog less effective. Then if need be put another mister in the bucket.

I don't see an exhaust fan on your tent. Without an exhaust fan running 4 to 6 air exchanges an hour. You will have a problem. You will also fill the room your tent is in with spores which is a health concern. If you have a circulation fan in the tent you can get away with fewer air exchanges.

Lastly, the humidity should be coming in low humidity rises.

https://thehouseofhydro.com/store/c2/120V_Products.html

Edited by SHROOMSISAY01 (11/06/18 07:07 PM)

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Invisibleforagedfungus
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Re: Humidification Trouble [Re: SHROOMSISAY01]
    #25597030 - 11/06/18 07:05 PM (6 years, 2 months ago)

Is your fogger on a float? Is it sitting at the right depth?

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Offlinefoodguy
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Re: Humidification Trouble [Re: SHROOMSISAY01]
    #25597039 - 11/06/18 07:12 PM (6 years, 2 months ago)

I did actually just put a piece of tape over a third of the intake. May choke it more. I do have an exhaust fan on the bottom blowing out, set on a timer, but it’s off right now while I see if the bucket can get the humidity up. Thought about building a new bucket, maybe with a smaller fan and 3 disc instead of single ultrasonic fogger.

What do you mean by low rises?

And yes, the fogger is on a float.

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Invisibleforagedfungus
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Re: Humidification Trouble [Re: foodguy]
    #25597068 - 11/06/18 07:24 PM (6 years, 2 months ago)

Does the fogger make lots of fog if you turn the fan off?

The difference of a few mm depth can make a big difference in how much fog those things put out. Can you adjust how deep it floats?

Also I've had some fogger discs that work fine for months, while others crap out in two or three days.

Quote:

foodguy said:


What do you mean by low rises?




He's saying that humidity rises, so have it come in the bottom. But in a chamber like that, the humidity should be going where you tell it to.

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Offlinefoodguy
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Re: Humidification Trouble [Re: foragedfungus]
    #25597080 - 11/06/18 07:29 PM (6 years, 2 months ago)

Wow, wish I would’ve known that. I have it going to the top and slightly pointed up. Seems like I see so many setups like this with humidity going up top and exhaust at the bottom. Should this be reverse?

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Invisibleforagedfungus
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Re: Humidification Trouble [Re: foodguy]
    #25597094 - 11/06/18 07:35 PM (6 years, 2 months ago)

Depends who you ask. Humid air rises, CO2 and contaminant spores both settle down...
Realistically, in a small chamber like that with both in and out fans, the air is going to go where you make it go.

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OfflineSHROOMSISAY01M
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Re: Humidification Trouble [Re: foodguy]
    #25597210 - 11/06/18 08:41 PM (6 years, 2 months ago)

Quote:

foodguy said:
Wow, wish I would’ve known that. I have it going to the top and slightly pointed up. Seems like I see so many setups like this with humidity going up top and exhaust at the bottom. Should this be reverse?




It is OK like you have it but you should have a circulation fan inside if you leave it like that. I see your exhaust fan now that needs to be piped outside or your room is going to be a mess with spores. Read on the health risks of inhaling spores. Once you inhale a spore it never leaves your body.

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OfflineSHROOMSISAY01M
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Re: Humidification Trouble [Re: foragedfungus]
    #25597245 - 11/06/18 08:54 PM (6 years, 2 months ago)

Quote:

foragedfungus said:
Depends who you ask. Humid air rises, CO2 and contaminant spores both settle down...
Realistically, in a small chamber like that with both in and out fans, the air is going to go where you make it go.




All true statements. It just depends on how you look at it. In my opinion, I would have a circulation fan in there and leave it like it is. I grow oysters so a circulation fan may not be needed again it depends on what you are growing. OK, I am in the active section so I am pretty sure you are not growing oysters.

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Offlinefoodguy
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Re: Humidification Trouble [Re: SHROOMSISAY01]
    #25597787 - 11/07/18 05:15 AM (6 years, 2 months ago)

I guess I should’ve put it in the gourmet, I’m growing oysters too. Exhausting outdoors is going to be difficult in this room, think I could build a filtered catch for the exhaust?

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OfflineSHROOMSISAY01M
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Re: Humidification Trouble [Re: foodguy]
    #25598609 - 11/07/18 01:22 PM (6 years, 2 months ago)

Quote:

foodguy said:
I guess I should’ve put it in the gourmet, I’m growing oysters too. Exhausting outdoors is going to be difficult in this room, think I could build a filtered catch for the exhaust?




I do not think a filter will work. And exhausting into that room is going to make positive pressure you will have spores all throughout your house and if you have kids this is a NO NO. I am sure someone on here can help but I am not the one to ask. I exhaust outside.

If you are growing oysters you are going to need a circulation fan for sure inside the tent and I would suggest a WILLHI WH1436H Put the sensor on the intake of the circulation fan this will give you the best reading. I use high-pressure mist from a pressure washer I built. My room is 10' x 4' x 7' and this is the controller I use.

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Offlinefoodguy
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Re: Humidification Trouble [Re: SHROOMSISAY01]
    #25599234 - 11/07/18 05:24 PM (6 years, 2 months ago)

I have an inkbird humidity sensor in the tent. What kind of fan do you recommend for circulation in a smaller grow like this?

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OfflineSHROOMSISAY01M
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Re: Humidification Trouble [Re: foodguy]
    #25599386 - 11/07/18 06:32 PM (6 years, 2 months ago)

I would use an IP 68 fan. IP is water rating you can look it up on the net.

I used this one and it is of good quality...

https://www.amazon.com/gp/product/B0149S6VEW/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

You may need a speed controller but I doubt it. It will more than likely be ok running full speed. Here is the one I have...

https://www.amazon.com/gp/product/B071H2YQG5/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

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OfflineWeavieWonder
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Re: Humidification Trouble [Re: SHROOMSISAY01]
    #25599567 - 11/07/18 08:30 PM (6 years, 2 months ago)

I would recommend a speed controller for the fan. An output controller for the fogger is a good idea also.  With the ability to control both, you can dial in conditions perfectly. There is no need to put a circulation fan in a green house that small.

The reason your humidity may not be as high as you would like is because there is too much air moving through the green house. A bigger fogger is not the answer. You only need about 6 air exchanges  per hour. In a small setup like yours, it doesn't take much. You could buy a fan with half the power you have now and it would probably still be too much.

Edited by WeavieWonder (11/07/18 08:35 PM)

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OfflineSHROOMSISAY01M
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Re: Humidification Trouble [Re: WeavieWonder]
    #25599692 - 11/07/18 09:51 PM (6 years, 2 months ago)

Quote:

WeavieWonder said:
I would recommend a speed controller for the fan. An output controller for the fogger is a good idea also.  With the ability to control both, you can dial in conditions perfectly. There is no need to put a circulation fan in a green house that small.

The reason your humidity may not be as high as you would like is because there is too much air moving through the green house. A bigger fogger is not the answer. You only need about 6 air exchanges  per hour. In a small setup like yours, it doesn't take much. You could buy a fan with half the power you have now and it would probably still be too much.




If he was not growing oysters I would agree with you on the circulation fan but he is growing oysters so I would suggest a circulation fan. The fan also cuts down on the # of air exchanges he will need. Also being a small space it will build up carbon dioxide much quicker.

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OfflineAsuraS
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Re: Humidification Trouble [Re: SHROOMSISAY01]
    #25599716 - 11/07/18 10:10 PM (6 years, 2 months ago)

I have similar set up, but I use a 3-disc fogger



Did you calibrate your humidity sensor?

A 1-disc fogger should be plenty for that.

Also, you need to pimp your bucket a bit. You can put one of these connectors on top (the
one on the left)

https://smile.amazon.com/gp/product/B00EZT5AQ6/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1

You fan can just sit in the connector. When you need to add water to your bucket, you can
just lift the fan up and pour it in through the lid.


--------------------
Cultivating Panaeolus cyanescens


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OfflineWeavieWonder
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Re: Humidification Trouble [Re: SHROOMSISAY01]
    #25599745 - 11/07/18 10:27 PM (6 years, 2 months ago)

I haven't had a chance to grow edibles in a green house yet, only outdoors. I would think that if you're exchanging the air properly, that co2 would be a non issue, and an internal fan would be unnessecary. IMO having more air exchanges per hour (to a point) would be better, not less.  Oysters require constant fresh air. Thoughts?

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