Home | Community | Message Board

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


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!

Shop: North Spore Injection Grain Bag   Kraken Kratom Red Vein Kratom   Bridgetown Botanicals CBD Concentrates   PhytoExtractum Buy Bali Kratom Powder

Jump to first unread post Pages: 1 | 2 | 3 | 4 | Next >  [ show all ]
OfflineInfiniteshot
Stranger
 User Gallery

Registered: 03/10/16
Posts: 268
Last seen: 2 years, 10 months
Laminar flow hood filter damage. Hepa me!
    #26778817 - 06/24/20 09:36 AM (3 years, 7 months ago)

Hey all, just received a hepa filter today.  24x24 x6.  When I inboxed it I saw these bends in the aluminum.  The fabric hepa doesn’t appear to be torn.  I’m still a little worried.  Does anyone have any feedback to these photos? Thanks a ton for your time.



--------------------
rad


Extras: Filter Print Post Top
OfflineGan
Wielder of Narya
Male


Registered: 08/26/19
Posts: 927
Loc: Valinor
Last seen: 5 months, 27 days
Re: Laminar flow hood filter damage. Hepa me! [Re: Infiniteshot]
    #26778835 - 06/24/20 09:44 AM (3 years, 7 months ago)

For slight damage, you can bend them back very gently with needle nose pliers or something similar. However, with that kind of damage I'd ask for a refund or an exchange for another filter that isn't damaged. You might be fine just putting it back straight but you wouldn't know until you build you hood


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



Extras: Filter Print Post Top
OfflineInfiniteshot
Stranger
 User Gallery

Registered: 03/10/16
Posts: 268
Last seen: 2 years, 10 months
Re: Laminar flow hood filter damage. Hepa me! [Re: Gan]
    #26778855 - 06/24/20 09:53 AM (3 years, 7 months ago)

Thanks for the quick response.  Another filter is on its way.  Basically instantaneous great customer service.  I’ve built the box and it fits in fine. From what I’ve been reading on this site is that tearing of the medium or separation of the medium from the box are the biggest issues.  In a few days I’ll have two on hand and wasn’t sure whether to toss this one or to try and salvage it.  I think I’ll install the filter into the box and see how it works.  I have a 2.5 air quality monitor and maybe that will give some info.  I made the box so that filters can be replaced easily and in a way the back can be removed to check any internal issues.


--------------------
rad


Extras: Filter Print Post Top
OfflineSockadin
Male User Gallery


Registered: 01/03/10
Posts: 7,244
Last seen: 2 months, 20 days
Trusted Cultivator
Re: Laminar flow hood filter damage. Hepa me! [Re: Infiniteshot]
    #26778956 - 06/24/20 10:22 AM (3 years, 7 months ago)

You can fix that one. Det a long dowel rod 1/4 from Hardware store and some needle nose. You should see my FH filter after all these years. It's beat to hell. Just straighten for laminar flow.


Extras: Filter Print Post Top
OfflineRoscoeReturnsS
Crotchety chode man
Male

Registered: 02/12/18
Posts: 1,738
Loc: State of Confusion
Last seen: 2 hours, 38 minutes
Re: Laminar flow hood filter damage. Hepa me! [Re: Infiniteshot]
    #26778976 - 06/24/20 10:29 AM (3 years, 7 months ago)

I wouldn’t use that filter. I’ve tested hepa filters for ten years, and any time one looked that bad, it leaked. You may not see a tear on the surface, but the filter is 6” deep. There is likely damage to the filter, and to be honest you might not be able to see it even if it was on the surface. If it was just a small area, I might try to fix it with some RTV silicone, but you would be covering a significant portion of your filter. Without the ability to leak test after install, that is a gamble I wouldn’t want to risk.

Please don’t stick anything into the filter, like a dowel or needle nose. Those aluminum separators can be a little bent up and not hurt anything. You’re more likely to do some damage to the filter while trying to repair them.


Extras: Filter Print Post Top
OfflineInfiniteshot
Stranger
 User Gallery

Registered: 03/10/16
Posts: 268
Last seen: 2 years, 10 months
Re: Laminar flow hood filter damage. Hepa me! [Re: Sockadin]
    #26778982 - 06/24/20 10:31 AM (3 years, 7 months ago)

Quote:

Sockadin said:
You can fix that one. Det a long dowel rod 1/4 from Hardware store and some needle nose. You should see my FH filter after all these years. It's beat to hell. Just straighten for laminar flow.





Thanks a bunch.  I’ll give it a go.  I can’t believe how poorly this unit was packaged.  Just a basic box.  I’ll get on the repair today.


--------------------
rad


Extras: Filter Print Post Top
OfflineSockadin
Male User Gallery


Registered: 01/03/10
Posts: 7,244
Last seen: 2 months, 20 days
Trusted Cultivator
Re: Laminar flow hood filter damage. Hepa me! [Re: RoscoeReturns]
    #26778985 - 06/24/20 10:31 AM (3 years, 7 months ago)

How do you test a Hepa for leaks? I'm interested to try this on mine.


Extras: Filter Print Post Top
OfflineEl Chupacabra
Stoned Ape
Male


Registered: 01/07/19
Posts: 676
Loc: 🇺🇸
Last seen: 1 year, 16 days
Re: Laminar flow hood filter damage. Hepa me! [Re: Sockadin]
    #26778990 - 06/24/20 10:33 AM (3 years, 7 months ago)

If they don't require the damaged one to be returned then it looks like you can make 2 now, or have a replacement hepa.
It looks like the damage is just cosmetic just bent aluminum but you can be sure of it by leaving open agar plates in front of your running LFH.


Extras: Filter Print Post Top
OfflineInfiniteshot
Stranger
 User Gallery

Registered: 03/10/16
Posts: 268
Last seen: 2 years, 10 months
Re: Laminar flow hood filter damage. Hepa me! [Re: El Chupacabra]
    #26779009 - 06/24/20 10:38 AM (3 years, 7 months ago)

Quote:

El Chupacabra said:
If they don't require the damaged one to be returned then it looks like you can make 2 now, or have a replacement hepa.
It looks like the damage is just cosmetic just bent aluminum but you can be sure of it by leaving open agar plates in front of your running LFH.





I’m not required to send this one back.  The manufacturer says it’s beat to just replace it without all the hassle.  (Live good customer care).


--------------------
rad


Extras: Filter Print Post Top
OfflineInfiniteshot
Stranger
 User Gallery

Registered: 03/10/16
Posts: 268
Last seen: 2 years, 10 months
Re: Laminar flow hood filter damage. Hepa me! [Re: RoscoeReturns]
    #26779012 - 06/24/20 10:40 AM (3 years, 7 months ago)

Quote:

RoscoeReturns said:
I wouldn’t use that filter. I’ve tested hepa filters for ten years, and any time one looked that bad, it leaked. You may not see a tear on the surface, but the filter is 6” deep. There is likely damage to the filter, and to be honest you might not be able to see it even if it was on the surface. If it was just a small area, I might try to fix it with some RTV silicone, but you would be covering a significant portion of your filter. Without the ability to leak test after install, that is a gamble I wouldn’t want to risk.

Please don’t stick anything into the filter, like a dowel or needle nose. Those aluminum separators can be a little bent up and not hurt anything. You’re more likely to do some damage to the filter while trying to repair them.



Quote:

RoscoeReturns said:
I wouldn’t use that filter. I’ve tested hepa filters for ten years, and any time one looked that bad, it leaked. You may not see a tear on the surface, but the filter is 6” deep. There is likely damage to the filter, and to be honest you might not be able to see it even if it was on the surface. If it was just a small area, I might try to fix it with some RTV silicone, but you would be covering a significant portion of your filter. Without the ability to leak test after install, that is a gamble I wouldn’t want to risk.

Please don’t stick anything into the filter, like a dowel or needle nose. Those aluminum separators can be a little bent up and not hurt anything. You’re more likely to do some damage to the filter while trying to repair them.





Hey there.  How would you recommend I test the filter? I have an anemometer for air flow and in theory I could inoculate a jar or expose some afar and see what happens.  What’s your testing method?


--------------------
rad


Extras: Filter Print Post Top
OfflineSockadin
Male User Gallery


Registered: 01/03/10
Posts: 7,244
Last seen: 2 months, 20 days
Trusted Cultivator
Re: Laminar flow hood filter damage. Hepa me! [Re: Infiniteshot]
    #26779013 - 06/24/20 10:41 AM (3 years, 7 months ago)

Hey man if he said don't send it back than it is probably better not to use like Rosco said. I'm not a FH expert, now I'm thinking it might be time to get a new one my self. Mine is 5-7 years old. I can't remember.


Extras: Filter Print Post Top
OfflineInfiniteshot
Stranger
 User Gallery

Registered: 03/10/16
Posts: 268
Last seen: 2 years, 10 months
Re: Laminar flow hood filter damage. Hepa me! [Re: Sockadin]
    #26779018 - 06/24/20 10:44 AM (3 years, 7 months ago)

Bogus.


--------------------
rad


Extras: Filter Print Post Top
OfflineEl Chupacabra
Stoned Ape
Male


Registered: 01/07/19
Posts: 676
Loc: 🇺🇸
Last seen: 1 year, 16 days
Re: Laminar flow hood filter damage. Hepa me! [Re: Sockadin]
    #26779024 - 06/24/20 10:46 AM (3 years, 7 months ago)

Anemometers are pretty pointless TBH.
You should just run a live test by placing clean agar plates in front of it, take the lids off and leave them off for a while. If you end up with contamed plates then you know that you don't have good laminar flow.
The only thing I'm unsure about is how long you should leave them uncovered. Someone will chime in I'm sure


Extras: Filter Print Post Top
OfflineInfiniteshot
Stranger
 User Gallery

Registered: 03/10/16
Posts: 268
Last seen: 2 years, 10 months
Re: Laminar flow hood filter damage. Hepa me! [Re: El Chupacabra]
    #26779026 - 06/24/20 10:47 AM (3 years, 7 months ago)

Thanks a bunch.  Really appreciate it.


--------------------
rad


Extras: Filter Print Post Top
OfflineInfiniteshot
Stranger
 User Gallery

Registered: 03/10/16
Posts: 268
Last seen: 2 years, 10 months
Re: Laminar flow hood filter damage. Hepa me! [Re: Infiniteshot]
    #26779028 - 06/24/20 10:49 AM (3 years, 7 months ago)

Since this is my first flow hood and I can’t make agar plates to rest it before the replacement arrives.  Could I just make a few jars of grain that I know for a fact are sterile and then open those up in front of it for the test ?


--------------------
rad


Extras: Filter Print Post Top
OfflineSockadin
Male User Gallery


Registered: 01/03/10
Posts: 7,244
Last seen: 2 months, 20 days
Trusted Cultivator
Re: Laminar flow hood filter damage. Hepa me! [Re: El Chupacabra]
    #26779034 - 06/24/20 10:49 AM (3 years, 7 months ago)

That's not testing laminar flow leakage. That's just testing percentage of contamination. I'm really curious how they test laminar flow in the industry. Like a dye of some kind pumped into the back of the fan? Something that won't clog the filter? I really have no idea.


Extras: Filter Print Post Top
Invisiblesandman420
Saint PP
Male


Registered: 06/17/04
Posts: 5,384
Trusted Cultivator
Re: Laminar flow hood filter damage. Hepa me! [Re: Sockadin]
    #26779035 - 06/24/20 10:49 AM (3 years, 7 months ago)

Its easy to test if you have a particle counter or hot wire anemometer, sometimes you can even feel the breeze with your hands or face. That filter is totally fucked I guarantee it. This is why flowhood filters shouldn't be sent through UPS or FEDEX and only through a freight carrier on a pallet. They are way too fragile for the treatment they get going through those systems. If any of you have worked at UPS/FEDEX you know what I'm talking about. Goddamn Undertaker throws your filter off the top of a hell in a  cell and it plummets 16 feet through an announcers table shit.


--------------------
- 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
OfflineInfiniteshot
Stranger
 User Gallery

Registered: 03/10/16
Posts: 268
Last seen: 2 years, 10 months
Re: Laminar flow hood filter damage. Hepa me! [Re: sandman420]
    #26779045 - 06/24/20 10:52 AM (3 years, 7 months ago)

Thanks man, I won’t chance it.  I love your avatar! When Dwight throws that dummy’s face on his own I couldn’t stop laughing.  That whole episode is awesome.


--------------------
rad


Extras: Filter Print Post Top
InvisiblePastywhyteMDiscord
Say hello to my little friend
Male User Gallery


Registered: 09/15/12
Posts: 37,808
Loc: Canada Flag
Trusted Cultivator
Re: Laminar flow hood filter damage. Hepa me! [Re: Infiniteshot]
    #26779250 - 06/24/20 11:55 AM (3 years, 7 months ago)

I dunno that looks minor to me. Most big labs are not replacing filters everytime someone dents on or jabs a scalpel into it. It’s called a little silicone and it’s good to go. My flowhood had gotten a few small tears and I siliconed them up and it works fine. All my agar comes out fine with it. I wouldn’t even sweat those dents.


Extras: Filter Print Post Top
Invisiblegizmo1
Other User Gallery

Registered: 06/15/11
Posts: 3,831
Loc: FREEDOM Flag
Re: Laminar flow hood filter damage. Hepa me! [Re: Pastywhyte]
    #26779272 - 06/24/20 12:10 PM (3 years, 7 months ago)

Where are you ordering from that lets you keep the old filter.


--------------------
Trade List
🖕🖕🖕
6 hole Mini Monos


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

Shop: North Spore Injection Grain Bag   Kraken Kratom Red Vein Kratom   Bridgetown Botanicals CBD Concentrates   PhytoExtractum Buy Bali Kratom Powder


Similar ThreadsPosterViewsRepliesLast post
* specific questions building a laminar flow hood sumincita 296 5 08/29/21 01:08 PM
by cekoxa
* Could I use these to build a flow hood/filter thinger? NFNF 1,787 4 05/09/03 04:26 PM
by calicyco
* Flow hood question newuser1492 3,259 7 02/20/05 11:12 PM
by Newf
* Hepa Air Purifier Flow Hood? tenaciousC 2,738 1 04/20/02 06:51 PM
by Baccus
* Now, where should I get my HEPA flowhood? Zeppelin 1,072 6 06/05/03 12:11 AM
by 40oz
* Laminar flow hood q '' expert advices needed '' Michael_Ogic 3,030 18 09/11/04 11:26 AM
by hyphae
* RatThing’s Over-Designed Laminar Flow Cabinet RatThing 682 6 10/30/21 09:14 PM
by anatomality
* 6' Laminar Hepa unit Suggestions for flow hood construction 95rh 4,333 7 01/07/04 07:08 AM
by 95rh

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, LogicaL Chaos, 13shrooms, Stipe-n Cap, Pastywhyte, bodhisatta, Tormato, Land Trout, A.k.a
1,513 topic views. 29 members, 219 guests and 35 web crawlers are browsing this forum.
[ Show Images Only | Sort by Score | Print Topic ]
Search this thread:

Copyright 1997-2024 Mind Media. Some rights reserved.

Generated in 0.03 seconds spending 0.011 seconds on 16 queries.