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Machiavelliavore
Vermiculite Hater



Registered: 12/08/14
Posts: 3,038
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Last seen: 3 months, 19 days
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Adjusting SFD Monotub FAE
#22163207 - 08/30/15 01:07 AM (8 years, 4 months ago) |
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Just made a 66qt mono using homemade SFD from poly quilter's batting.
I used 1 layer for the top wholes, two for the bottom. 1 5/8" holes, 2top short side, 4bot long side configuration. Same configuration with 1 1/4" holes worked fine for a 30qt mini, but it seems like this tub could use a bit more FAE (not too many condensation trails coming from the top holes.)
I want to adjust the FAE by adding more holes, but I'm not sure whether adding them to the top or bottom would be better. I've head people say to loosten the top hole poly, others say they open up a bottom hole during fruiting. I always case with peat, so handling some extra FAE should be no issue.
I was thinking of adding two 1 1/4" holes, but I'm unsure if it would be better to go with the bottom short side or top long side. I'll probably leave them taped during pinning, then open them up during cropping.
Opinions would be appreciated. Since I know the SFD thickness if about right from the mini and I have limited ability to adjust it, I think adding holes is more practical.
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I spawned some popcorn casings and had double-overlay cause I didn't put enough hydrogen peroxide in my automated aquarium mister. I only got one mushroom so I cut off the head part where the seeds fall from and put it in a jar of LC and sprayed it all over a tin of PF cakes I made with gravel, cardboard, and bisquick in my microwave. I think it will be good cause B+ is so potent. Triggered yet? Only a square would say "a cube is a cube."
No, this does not look right...
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Psilosoulful

Registered: 09/05/14
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Last seen: 1 year, 1 month
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Quote:
Machiavelliavore said: I've head people say to loosten the top hole poly, others say they open up a bottom hole during fruiting.
I would keep the poly off on the top holes for a couple of hours each day for that extra FAE boost to kickstart pinning. But, completely removing the poly from the bottom holes seems like a quick way to dry out the surface(even with a casing). Unless you don't mind misting it a few times every day, then it would be fine. The more FAE, the better!!
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Machiavelliavore
Vermiculite Hater



Registered: 12/08/14
Posts: 3,038
Loc: The Sporetorn States
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I was talking about adding poly aditional sfd covered holes, since I can't change the thickness of the filters (I have 1 and 2 layers.) I just wasn't sure if putting them on the top or the bottom would be better.
Thanks for answering. People don't like my questions
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I spawned some popcorn casings and had double-overlay cause I didn't put enough hydrogen peroxide in my automated aquarium mister. I only got one mushroom so I cut off the head part where the seeds fall from and put it in a jar of LC and sprayed it all over a tin of PF cakes I made with gravel, cardboard, and bisquick in my microwave. I think it will be good cause B+ is so potent. Triggered yet? Only a square would say "a cube is a cube."
No, this does not look right...
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Psilosoulful

Registered: 09/05/14
Posts: 7,205
Last seen: 1 year, 1 month
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Never tried using SFD for monotub holes. I've only heard of people using easy-felt cloth as an alternative.
Don't think they would provide enough FAE for a mono.. You can't just use regular polyfill?
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PussyFart
Retired Cultivation Extrodinaire



Registered: 04/08/12
Posts: 22,502
Loc: Orbiting Earth
Last seen: 17 days, 17 hours
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Quote:
Psilosoulful said: Never tried using SFD for monotub holes.
They suck....they are meant to filter out most air, and are not adjustable....
What you want for monotubs is adjustable polyfill....so you can "fine tune" or "dial in" the airflow in the tub.
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THIS HOBBY IS NOT FOR THE IMPATIENT! PLEASE BE PATIENT, DON'T BE A PATIENT! A Tale of 10 Isolates, GT Cluster Clone Monotubs, RR's Let's Grow Mushrooms DVD, SGFC(Shotgun Fruiting Chamber), Monotub Tek, Damion5050's Coir Tek, TL's Tek List, Frank's Tek List, EvilMushroom666's Pasteurization Tek, How It Should & Shouldn't Look - NEW CULTIVATORS GUIDE *** *** AFGHAN KUSH GROW LOG *** ***
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Psilosoulful

Registered: 09/05/14
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Re: Adjusting SFD Monotub FAE [Re: PussyFart]
#22166438 - 08/30/15 08:27 PM (8 years, 4 months ago) |
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Machiavelliavore
Vermiculite Hater



Registered: 12/08/14
Posts: 3,038
Loc: The Sporetorn States
Last seen: 3 months, 19 days
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Re: Adjusting SFD Monotub FAE [Re: PussyFart]
#22166846 - 08/30/15 09:34 PM (8 years, 4 months ago) |
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Quote:
PussyFart said:
Quote:
Psilosoulful said: Never tried using SFD for monotub holes.
They suck....they are meant to filter out most air, and are not adjustable....
What you want for monotubs is adjustable polyfill....so you can "fine tune" or "dial in" the airflow in the tub.
Obviously you can adjust it, but by adjusting the covered surface area at the top and bottom of the tub and the number of layers. It's very close to where I want to be, and I am simply unsure of whether adding a small extra pair of holes (1.25") at the top or the bottom would be better.
If the top to bottom airflow based on an increasing density gradient is correct, then I would think that there merely needs to be a sufficient area covered with porous material for air to be sucked in through at the top of the tub, and the real adjustment would be how many bottom holes. I've heard of loosening the top hole poly, as well as opening up a single bottom hole during cropping. Pasty says he tapes up some of his top holes (hybrid cfg) during pinning. He also said the 4 bottom hole configuration provided better FAE. Anywhere you reduce resistance or increase air exchange surface area, more FAE will be the result. I do have two 66 qts, maybe I'll try one each way.
I just want some perspective on the nuance of adjusting FAE at the top vs the bottom of the tub.
What I am using is not SFD technically, it's ironed low loft poly quilter's batting. I had it around from making filters for my grain jars, and using it seems like a cleaner more convenient solution anyway.
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I spawned some popcorn casings and had double-overlay cause I didn't put enough hydrogen peroxide in my automated aquarium mister. I only got one mushroom so I cut off the head part where the seeds fall from and put it in a jar of LC and sprayed it all over a tin of PF cakes I made with gravel, cardboard, and bisquick in my microwave. I think it will be good cause B+ is so potent. Triggered yet? Only a square would say "a cube is a cube."
No, this does not look right...
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PussyFart
Retired Cultivation Extrodinaire



Registered: 04/08/12
Posts: 22,502
Loc: Orbiting Earth
Last seen: 17 days, 17 hours
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Quote:
Machiavelliavore said: What I am using is not SFD technically, it's ironed low loft poly quilter's batting. I had it around from making filters for my grain jars, and using it seems like a cleaner more convenient solution anyway.
Yes, u used it for your grain jars that required no FAE(fresh air exchange) at all, but very minimal GE(gas exchange) instead.....now u want to use the exact same stuff(which by nature retricts airflow so much we use it to filter our sterile grain jars), in multiple layers mind you, for a monotub that requires tons of FAE.....it makes no sense....If anything you would want to use half or quarter layers of that stuff....and even then u might be restricting too much.....
I am not arguing, just trying to understand what u are expecting to acheive here.
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THIS HOBBY IS NOT FOR THE IMPATIENT! PLEASE BE PATIENT, DON'T BE A PATIENT! A Tale of 10 Isolates, GT Cluster Clone Monotubs, RR's Let's Grow Mushrooms DVD, SGFC(Shotgun Fruiting Chamber), Monotub Tek, Damion5050's Coir Tek, TL's Tek List, Frank's Tek List, EvilMushroom666's Pasteurization Tek, How It Should & Shouldn't Look - NEW CULTIVATORS GUIDE *** *** AFGHAN KUSH GROW LOG *** ***
Edited by PussyFart (08/30/15 09:45 PM)
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Psilosoulful

Registered: 09/05/14
Posts: 7,205
Last seen: 1 year, 1 month
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Re: Adjusting SFD Monotub FAE [Re: PussyFart]
#22166902 - 08/30/15 09:48 PM (8 years, 4 months ago) |
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Quote:
PussyFart said: just trying to understand what u are expecting to acheive here.
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Machiavelliavore
Vermiculite Hater



Registered: 12/08/14
Posts: 3,038
Loc: The Sporetorn States
Last seen: 3 months, 19 days
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The same stuff for grain jars, over a tiny nail hole. The surface area difference is immense. The same poly stuffing you use in your monotubs is used by many as the filter in their grain jars...
Like I said, I'm already close. My mini worked nicely (fit franks dial in description,) good pinset, no fuzzy feet. I increased the hole size to 1 5/8" for the 66 qt, but I feel that's not quite enough, so I would like to add an extra set of holes, but I'm unsure whether to add them at the top or bottom.
Think of it as do I loosen the top or bottom polyfill? According to frank's guide, it would be the top poly, but opinions seem to vary on this matter.
http://www.shroomery.org/forums/showflat.php/Number/20115107#20115107 was an officially recommended tek on TNF, and the guy's results look pretty good. It's just a different method for restricting airflow, that requires a different adjustment method, but is conceptually the same.
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I spawned some popcorn casings and had double-overlay cause I didn't put enough hydrogen peroxide in my automated aquarium mister. I only got one mushroom so I cut off the head part where the seeds fall from and put it in a jar of LC and sprayed it all over a tin of PF cakes I made with gravel, cardboard, and bisquick in my microwave. I think it will be good cause B+ is so potent. Triggered yet? Only a square would say "a cube is a cube."
No, this does not look right...
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