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Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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Shop: North Spore North Spore Mushroom Grow Kits & Cultivation Supplies   Sporeworks.EU Spores for European Microscopy

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Building and Tuning my Flow Hood * 5
    #29367281 -

My Flow Hood 'After the Build' Build.

Like anyone else cultivating mushrooms, I desired a flow hood for my workflow to be easier. I opted for a 24" x 18" x 6" HEPA from Glasfloss and a Dayton 1TDT8 blower.

Seeing others builds posted here I had to laugh because they looked so clunky and ugly.
Being a carpenter, I can streamline this contraption and make it as small as possible too.

So instead of building a box on top of a box to house the blower, I elected to incorporate the sides of the flow hood into the blower housing. I started by making the flow hood the size of the filter and 14" deep. I then made a shelf that sits on top of HEPA and to sit the blower on. From here I measured the blower height, obtained my pre-filter size and combined this info to determine the slanted shape the flow hood is now. The size of the pre-filter determines the angle of the upper part of the flow hood.
 


I then installed electrical for lights and plugs.


And I also installed a magnehelic gauge to monitor plenum pressure. Worth every penny.


Here's the air hose to the plenum.


Looking pretty good on the inside so far. Seen here with a second revision of the diffuser.


First Prototype Build
On my first build I had an understanding that the air should be diffused to make use of the plenum correctly and not to wear out the filter by having air blow directly onto the filter. This worked somewhat but left me with turbulent air at filter face. This is extra plywood from the build. About 5 inches wide and about 18" long, ripped to a 15 degree angle and installed next to and below the blower where the air is forced through and into the plenum.



Second Build with Larger Diffuser
So I opened it back up and put a larger piece of strand board directly to the first diffuser. I also put a framing member along the bottom, screwed through from the outside, to keep any wood from flopping around. I also installed a block of wood to hold the middle of this support still as well. From the center of the support down to the cleats holding the HEPA filter.

Now after achieving laminar flow I had another problem. The face of the HEPA had vastly different readings from one area of the filter to the next. The center and bottom having the most force. I needed to fix this to make it worth my investment.
 



Third and Current Diffuser Build
I removed the strand board from the flow hood, leaving the original small diffuser. I then installed cleats along the sides and bottom to support the new wood securely. No vibrations or chugging of air allowed.
   
 

I then installed the peg board from the top of the plenum down to the cross support.
 

Then another piece of pegboard from the mid support down to the cleat I installed earlier at the bottom of the plenum. The pegboard now goes all the way to the sides of the plenum and all the way top to bottom.

I also put a shaped piece of wood at the back corner to help roll the air out of the corner.


--------------------
Agar Plates and Removing Hidden Contaminants - A Visual Notebook
Recognizing Contamination in Grain Jars - A Visual Notebook
Contaminated Condiment Cup Cleanup v1.0

Green Cap Pheno Isolation
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Extras: Filter Print Post Top
Re: Building and Tuning my Flow Hood [Re: DV8DUG] * 1
    #29367393 -

Beautiful DV8. Serious build


--------------------
No nation, no border
Fight law and order


Species grown so far

Extras: Filter Print Post Top
Re: Building and Tuning my Flow Hood [Re: Churpee Choozle] * 1
    #29611441 -

Nice work! That's a great looking machine!


--------------------
This hobby has taught me many things.
Most of those things are patience.

The Hitchhiker's Guide to the Shroomery
The Official Shroomery Cultivation Museum
CakeWars
III

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Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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