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starburstmemories
Lychen



Registered: 10/23/23
Posts: 77
Last seen: 3 months, 19 days
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Paper filter lids not providing enough GE
#28659306 - 02/14/24 07:44 AM (10 months, 27 days ago) |
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Has anyone had negative experiences with paper filters?
I was happily using polyfill, no contamination, fast colonisation. Thought I’d up my game switching to paper filters…
First attempt keeping the same vent as before, one 10mm hole, totally choked my jars. Had to pop the lids, in my sab, worked out ok but not great..
I increased to two filters per 1q jar, and ran tests against my good old polyfill. On two strains, in symmetrical configurations in my incubator. Still slower..
Next gonna try three filters per jar, though I’m not sure it’s worth the trouble… Curious to hear what people think on the topic.
Peace all
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Reaching for the summit, one way or another
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DERRAYLD
Constructus



Registered: 05/13/02
Posts: 12,109
Loc: South Africa
Last seen: 8 hours, 43 minutes
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Doubt it's the filters, I use 2 filters per jar and mp tape over them.
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starburstmemories
Lychen



Registered: 10/23/23
Posts: 77
Last seen: 3 months, 19 days
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Re: Paper filter lids not providing enough GE [Re: DERRAYLD]
#28660546 - 02/15/24 09:16 AM (10 months, 26 days ago) |
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Quote:
DERRAYLD said: Doubt it's the filters, I use 2 filters per jar and mp tape over them.
Thanks for getting back to me. I've ran about 12 jars with those filters and running all sorts of tests against polyfill, the numbers do add up, my filters are definitely too airtight. It's these guys.
https://www.amazon.co.uk/dp/B08P1RN4BV?ref=ppx_yo2ov_dt_b_product_details&th=1
I'm thinking filters probably come in different flavours in terms of density. Any chance you could send me a link to the ones you use so I can check specs?
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DERRAYLD
Constructus



Registered: 05/13/02
Posts: 12,109
Loc: South Africa
Last seen: 8 hours, 43 minutes
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Synthetic Filter Paper Stickers 20 mm 0.3 μm Filter Disc Mushroom Applied Under Wide Mouth Jar Lid for Mushroom Cultivation (256) https://a.co/d/2m0W2TS
Identical stickers
Edited by DERRAYLD (02/15/24 10:15 AM)
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36fuckin5
Alchemycologist


Registered: 08/11/03
Posts: 12,097
Loc: Diving into Mystical Territori...
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Re: Paper filter lids not providing enough GE [Re: DERRAYLD] 2
#28660642 - 02/15/24 10:53 AM (10 months, 26 days ago) |
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If 2 filters were worse than one, why would you try 3 filters?
Just keep using Polyfil if it's working.
-------------------- Pat The Bunny said:
A punk rock song won't ever change the world, but I can tell you about a couple that changed me.
bodhisatta said:
i recommend common sense and figuring it out.
These are the TEKs I use. They're all as cheap and easy as possible, just like your mom.
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Mycolorado
Hobbyist


Registered: 07/23/16
Posts: 8,579
Loc: Interdimensional Bootcamp
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Re: Paper filter lids not providing enough GE [Re: 36fuckin5] 3
#28660671 - 02/15/24 11:17 AM (10 months, 26 days ago) |
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Quote:
36fuckin5 said: Just keep using Polyfil if it's working.
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starburstmemories
Lychen



Registered: 10/23/23
Posts: 77
Last seen: 3 months, 19 days
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Re: Paper filter lids not providing enough GE [Re: DERRAYLD]
#28663675 - 02/17/24 10:15 AM (10 months, 24 days ago) |
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Quote:
DERRAYLD said: Synthetic Filter Paper Stickers 20 mm 0.3 μm Filter Disc Mushroom Applied Under Wide Mouth Jar Lid for Mushroom Cultivation (256) https://a.co/d/2m0W2TS
Identical stickers
Thanks. Maybe it's just that my polyfill setup is particularly fast then.. my results are too consistent to be coincidental. Think I'll stick with PF.
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starburstmemories
Lychen



Registered: 10/23/23
Posts: 77
Last seen: 3 months, 19 days
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Re: Paper filter lids not providing enough GE [Re: 36fuckin5]
#28663679 - 02/17/24 10:21 AM (10 months, 24 days ago) |
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Quote:
36fuckin5 said: If 2 filters were worse than one, why would you try 3 filters?
Just keep using Polyfil if it's working.
Hey, thanks for responding. I didn't say that, sorry if I wasn't clear.
One filter literally choked growth, I had to pop the lids.
Two filters were still slower than polyfill, not then one filter 
I'm only running 3 filters out of curiosity really. I just like the neatness of filters and a separate injection port. But as you guys say, why break it if it works. I haven't had a contaminated jar... yet.
To be fair, I also had issues with PF in the past, when I went all paranoid and started stuffing that stuff super tight. Since then I dialled it back down, could be that I reached a point where it's loose and fast, maybe I'm playing with fire contam wise but so far so good..
Edited by starburstmemories (02/17/24 10:56 AM)
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ItsLinkNotZelda
Meat Popsicle
Registered: 01/20/24
Posts: 69
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If you aren't getting enough GE with those modified lids maybe try one or two out with unmodified lids, they have been working for my jars. Tighten the lid, undo it about a quarter turn and it seems to be working, I also left the foil on top of the lids after sterilizing so that might help with keeping some contams out but so far it's worked well for me.
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starburstmemories
Lychen



Registered: 10/23/23
Posts: 77
Last seen: 3 months, 19 days
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Re: Paper filter lids not providing enough GE [Re: ItsLinkNotZelda]
#28664888 - 02/18/24 04:16 AM (10 months, 23 days ago) |
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Quote:
ItsLinkNotZelda said: If you aren't getting enough GE with those modified lids maybe try one or two out with unmodified lids, they have been working for my jars. Tighten the lid, undo it about a quarter turn and it seems to be working, I also left the foil on top of the lids after sterilizing so that might help with keeping some contams out but so far it's worked well for me.
Hey, yeah unmod lids work but I only use them for smaller jars (1/2 pint or less), that I use to test out clone cultures and various selections before sending the best to bulk. For larger ones I do prefer the safety of injection ports and vents.
PF works great, I was just hoping to get similar results from cleaner setups with filters.
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len53
Stranger


Registered: 05/07/16
Posts: 25
Last seen: 57 minutes, 6 seconds
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same problem here. qt and pint jar all very slow.
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starburstmemories
Lychen



Registered: 10/23/23
Posts: 77
Last seen: 3 months, 19 days
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Re: Paper filter lids not providing enough GE [Re: len53]
#28667694 - 02/20/24 05:07 AM (10 months, 21 days ago) |
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Quote:
len53 said: same problem here. qt and pint jar all very slow.
Hey Len. Are they specifically slow when you use filter papers instead of other lid teks? Or just generally slow?
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Reaching for the summit, one way or another
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len53
Stranger


Registered: 05/07/16
Posts: 25
Last seen: 57 minutes, 6 seconds
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Quote:
vazap said:
Hey Len. Are they specifically slow when you use filter papers instead of other lid teks? Or just generally slow?
this filter paper jar take 14+ days to fully colonized.
my old micro tape lid jar only need 7 to 10 days. IIRC
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starburstmemories
Lychen



Registered: 10/23/23
Posts: 77
Last seen: 3 months, 19 days
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Re: Paper filter lids not providing enough GE [Re: len53]
#28676753 - 02/26/24 10:08 AM (10 months, 15 days ago) |
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Quote:
len53 said:
Quote:
vazap said:
Hey Len. Are they specifically slow when you use filter papers instead of other lid teks? Or just generally slow?
this filter paper jar take 14+ days to fully colonized.
my old micro tape lid jar only need 7 to 10 days. IIRC
That's good to know thanks. So what did you chose to do? Revert to your previous tek or stick with paper?
I'm guessing if you're not in a rush, there might be advantages to paper? Did you notice a drop in contam or anything by any chance?
I've tested 3 paper vents per jar, and though better than 2 it's still slightly slower than PF. So all in all I end with a plethora of lid variations 
I also noticed wheat is much faster than rye for me. Like twice as fast.
So in the end I might just use options, for urgently needed jars I might use wheat and PF, longer term ones 1-2or3 paper vents and rye, that kind of thing. All with a self healing port.
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