Home | Community | Message Board
You are not signed in.
Sign In New Account
Forum Index Search Posts Trusted Vendors Highlights Galleries FAQ User List Chat Store Random Growery

Magic-Mushrooms-Shop.com
This site includes paid links. Please support our sponsors.

Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
Threaded Mode Threaded  Previous topic Previous  View all topics Index  Next topic Next 

Welcome to the Shroomery Message Board! You are experiencing a small sample of what the site has to offer. Please login or register to post messages and view our exclusive members-only content. You'll gain access to additional forums, file attachments, board customizations, encrypted private messages, and much more!

Jump to first unread post Pages: 1 | 2 | 3 | 4 |  [ show all ]
Some of these posts are very old and might contain outdated information. You may wish to search for newer posts instead.
HEPA blower matching question
    #25850150 -

Ok, so I've bought a HEPA filter that has these specs:

CamFil 855023624 - 22.75"x41.75" WG 0.40" 550cfm

According to my math I need a fan that will push at least 659.5cfm @ WG 0.60" (0.40" for HEPA + 0.20" for pre-filter)

I'm looking at either the Dayton 1TDT5 which pushes 710cfm @ WG 0.60" (~107cfm from HEPA) or the Dayton 1TDU1 which pushes 725cfm @ WG 0.60" (~110cfm from HEPA)

They're both a little over powered, but I figured its better to have the flow a little stronger than too weak.

My question is, will these blowers match my HEPA? I'd ideally like to be able to use the 1TDT5 because its a bit cheaper. But I want to double check my math here before I press the buy button.

Many thanks!


--------------------
PC's LAGM 2021 (TOC & TWC)
P. natalensis Growlog 2021
Pans for PC Fall 2021 Growlog

“I must not fear. Fear is the mind-killer. Fear is the little death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.” - Bene Gesserit Litany Against Fear


Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: PitcherCrab]
    #25850192 -

A little something to chew on...you will not be able to get the full life out of the hepa filter if you match it to a new filters SP. The filters are good until they are double the starting SP, called recommended final pressure drop. As the filter loads up over time the SP increases. Ideally you would buy a fan that pushes 657 cfm at 1" SP since this is double the starting SP + your prefilter. Then you can wire it on low/med or block the intake to get your 657 cfm at 0.6" and then as it loads up change the amount blocked or wire it up to the next speed.


--------------------
- Sandbag Tek - How To Sterilize Spawn Bags - All About Static Pressure / Pressure Drop for DIY Flow Hoods - Sandman's LC Tek-

Marijuanaut escapes earth to cultivate - Grow-room is church temple of the new stoner breed

Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: sandman420] * 1
    #25850202 -

You can use a magnehelic gauge to monitor your filters SP.













--------------------
- Sandbag Tek - How To Sterilize Spawn Bags - All About Static Pressure / Pressure Drop for DIY Flow Hoods - Sandman's LC Tek-

Marijuanaut escapes earth to cultivate - Grow-room is church temple of the new stoner breed

Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: sandman420]
    #25850506 -

Oh, thats a really good tip. Thank you! I didn't think about that.

Do most blower fans come with the option to wire them to a lower speed? It looks like all the Daytons just have one speed that varies in relation to SP. If I get the biggest one they make, the 1TDU2 (1080cfm @ 0.60" &  1000cfm@ 1"), I could block the intake, but it doesn't look like I could wire in a speed control.

Any recommendation on another brand that I could use with speed control?


--------------------
PC's LAGM 2021 (TOC & TWC)
P. natalensis Growlog 2021
Pans for PC Fall 2021 Growlog

“I must not fear. Fear is the mind-killer. Fear is the little death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.” - Bene Gesserit Litany Against Fear


Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: PitcherCrab]
    #25850581 -

You don't want to use a speed controller, unless it is has an ECM motor or a few other special types which are pricey. I damn near burned my new-to-me blower up the other day using a speed controller while testing it out. Worked fine with a previous blower but apparently it's not universal. It's easy to partially block the intake with some Gorilla duct tape.


--------------------
- Sandbag Tek - How To Sterilize Spawn Bags - All About Static Pressure / Pressure Drop for DIY Flow Hoods - Sandman's LC Tek-

Marijuanaut escapes earth to cultivate - Grow-room is church temple of the new stoner breed

Edited by sandman420 (03/03/19 08:24 PM)

Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: sandman420]
    #25850602 -

So just to be clear, if I match my 22.75"x41.75" (550CFM 0.40" WG) HEPA with the Dayton 1TDU2 that does 1080cfm @ 0.60" &  1000cfm @ 1" and cover the intake to slow it down to 100cfm coming out the filter I'll be all set? Then as my filter clogs over time I'll be able to uncover the intake to account for the higher static pressure?


--------------------
PC's LAGM 2021 (TOC & TWC)
P. natalensis Growlog 2021
Pans for PC Fall 2021 Growlog

“I must not fear. Fear is the mind-killer. Fear is the little death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.” - Bene Gesserit Litany Against Fear


Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: PitcherCrab]
    #25850610 -

Yea that will do you good. I like the Gorilla tape because it's easy to remove as you need to. You can just peel one strip off or cut it out or whatever. You'll just need to go with the old lighter test to get it dialed in. Probably start about half taped up or so and peel a strip or two off with testing. If you just tape a piece of cardboard it might come loose and make a bad thing happen.


--------------------
- Sandbag Tek - How To Sterilize Spawn Bags - All About Static Pressure / Pressure Drop for DIY Flow Hoods - Sandman's LC Tek-

Marijuanaut escapes earth to cultivate - Grow-room is church temple of the new stoner breed

Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: sandman420]
    #25850666 -

How did you mount your blower to your flow hood box? I see the 1TDU2 doesn't have any flange to attach as some of the other models do.


--------------------
PC's LAGM 2021 (TOC & TWC)
P. natalensis Growlog 2021
Pans for PC Fall 2021 Growlog

“I must not fear. Fear is the mind-killer. Fear is the little death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.” - Bene Gesserit Litany Against Fear


Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: PitcherCrab]
    #25850703 -

There should be a matching mounting bracket available but I can't seem to locate it. Give Grainger a call and they will get you sorted on one.


--------------------
- Sandbag Tek - How To Sterilize Spawn Bags - All About Static Pressure / Pressure Drop for DIY Flow Hoods - Sandman's LC Tek-

Marijuanaut escapes earth to cultivate - Grow-room is church temple of the new stoner breed

Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: sandman420]
    #25851055 -

I am still finding myself concerned that the 1TDU2 will be far too powerful for this panel. How would I go about figuring out how much cfm I'd get if I don't block off the fan intake?

I did some math and the figure I came to was about 163.7fpm. But I can't tell if that number is totally wrong! From what I've read if 163.7fpm is right that is still a workable speed before blocking the intake to lower it to 100fpm.

edit: changed cfm to fpm


--------------------
PC's LAGM 2021 (TOC & TWC)
P. natalensis Growlog 2021
Pans for PC Fall 2021 Growlog

“I must not fear. Fear is the mind-killer. Fear is the little death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.” - Bene Gesserit Litany Against Fear


Edited by PitcherCrab (03/04/19 10:14 AM)

Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: PitcherCrab]
    #25851114 -

I think the flow coming out of the front is supposed to come out at 100 fpm. The fan doesnt need to be pushing at 100 cfm.


--------------------
https://www.shroomery.org/forums/showflat.php/Number/20643482#20643482

Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: topohunt]
    #25851395 -

He meant FPM (feet per minute).

Yes it would be 164 FPM if you dont block the intake. That's why you partially block the intake while the filter is new :wink: You want about 100-110fpm out of the filter face.


--------------------
- Sandbag Tek - How To Sterilize Spawn Bags - All About Static Pressure / Pressure Drop for DIY Flow Hoods - Sandman's LC Tek-

Marijuanaut escapes earth to cultivate - Grow-room is church temple of the new stoner breed

Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: sandman420]
    #25851563 -

Oops! Yup I forgot to change it from cfm to fpm once I divided. Thanks for all the help sandman420. I'm gonna go with the 1TDU2. I'll post an update on another thread once I have all my parts and do my build.


--------------------
PC's LAGM 2021 (TOC & TWC)
P. natalensis Growlog 2021
Pans for PC Fall 2021 Growlog

“I must not fear. Fear is the mind-killer. Fear is the little death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.” - Bene Gesserit Litany Against Fear


Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: PitcherCrab]
    #25851623 -

Dont forget to use install a magnehelic if you wanna be a super cool dude with big nipples like me. A 1" range one like mine will be perfect for you, it's the Magnehelic 2001 model. You can score them used/new on ebay for $30-$50. Should come with 2 plugs and 2 hose barbs. If it doesnt come with fittings they are 1/8NPT threads so 2 of 1/8 npt plugs and 2 of 1/8 npt x 1/4" hose barbs.


--------------------
- Sandbag Tek - How To Sterilize Spawn Bags - All About Static Pressure / Pressure Drop for DIY Flow Hoods - Sandman's LC Tek-

Marijuanaut escapes earth to cultivate - Grow-room is church temple of the new stoner breed

Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: sandman420]
    #25851662 -

Word, I think I'll be doing that. Those photos you posted before have all the info I need to put the hoses in the correct place right? High port hose into plenum, low port hose to the outside?


--------------------
PC's LAGM 2021 (TOC & TWC)
P. natalensis Growlog 2021
Pans for PC Fall 2021 Growlog

“I must not fear. Fear is the mind-killer. Fear is the little death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.” - Bene Gesserit Litany Against Fear


Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: PitcherCrab]
    #25851780 -

Yep that all there is too it.


--------------------
- Sandbag Tek - How To Sterilize Spawn Bags - All About Static Pressure / Pressure Drop for DIY Flow Hoods - Sandman's LC Tek-

Marijuanaut escapes earth to cultivate - Grow-room is church temple of the new stoner breed

Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: sandman420]
    #25851820 -

Just saving for later. . .


--------------------


Nothing breads nothing

Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: Geinstein]
    #25852016 -

There's really no point to a manometer. If you're loosing flow you'll notice. Besides it doesn't tell you your FPM airspeed out the front. Just check with a lighter now and then


--------------------
Everything you need in one spot.

My Q&A thread. Ask me questions here rather than in Private Message
Bod's chat thread

5g a day keeps the 5g away

Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: bodhisatta]
    #25852031 -

i agree. actually, I value a good ol open plate test more than a lighter test. It's my go to. Anytime i question my filter or flow i just do a ten minute plate test. The results are undeniable.


--------------------
Masters and slaves hunting clones        How not to isolate (it worked, but)


Extras: Filter Print Post Top
Re: HEPA blower matching question [Re: sandman420]
    #25852036 -

sandman420 said:
There should be a matching mounting bracket available but I can't seem to locate it. Give Grainger a call and they will get you sorted on one.


I emailed Grainger about the bracket for the 1TDU2. This is what they said:

"The 5TCJ3 is a support that is listed to work with your 1TDU2 blower.  It says on the internet that it Is for use with the 1XJX8 and 1XJX9 but our system says it will also work with the 5TCJ3."


--------------------
PC's LAGM 2021 (TOC & TWC)
P. natalensis Growlog 2021
Pans for PC Fall 2021 Growlog

“I must not fear. Fear is the mind-killer. Fear is the little death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.” - Bene Gesserit Litany Against Fear


Extras: Filter Print Post Top
Jump to top Pages: 1 | 2 | 3 | 4 |  [ show all ]

Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
Threaded Mode Threaded  Previous topic Previous  View all topics Index  Next topic Next 

Similar ThreadsPosterViewsRepliesLast post
* hepa air filter question XAZIA 771 2 01/30/02 02:38 PM
by XAZIA
* Flowhood without hepa filter? TheShroomHermit 1,283 3 04/05/03 12:15 AM
by SixTango
* flow hoods matching blower with filter is this right? greenshaman 5,508 10 04/22/18 09:08 AM
by bodhisatta
* hepa filter coming_up_roses 1,047 4 02/28/03 06:45 PM
by igore
* prefilter for hepa? cant figure out blower, have read faq. kilgore_trout 1,162 4 08/26/04 07:26 PM
by kilgore_trout
* Flowhood prefilter Wheedhead! 1,127 6 08/11/03 10:45 PM
by hyper_dermic
* which blower must i use for this hepa filter? yoko 1,572 4 10/22/03 08:11 AM
by dastats
* Hepa type filter - flow hood - cheap & easy
( 1 2 all )		 SixTango 17,570 25 04/09/02 11:14 AM
by rebelmoon

Extra information
You cannot start new topics / You cannot reply to topics
HTML is disabled / BBCode is enabled
Moderator: Shroomism, george castanza, RogerRabbit, veggie, mushboy, fahtster, the_chosen_one, LogicaL Chaos, 13shrooms, hamloaf, cronicr, Stipe-n Cap, Pastywhyte, bodhisatta, Tormato, Land Trout, A.k.a
1,782 topic views. 12 members, 2,109 guests and 86 web crawlers are browsing this forum.
[ Show Images Only | Sort by Score | Print Topic ]
Search this thread:

Copyright 1997-2026 Mind Media. Some rights reserved.

Generated in 0.036 seconds spending 0.011 seconds on 16 queries.