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OfflineTH-E
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Achieving proper moisture content after water bath pasteurization
    #27056597 - 11/25/20 05:31 AM (3 years, 2 months ago)

Heyo, long time no post. What's up ya'll?

So my question is how do you guys "dry" your bulk manure/straw substrates to proper moisture content after water bath pasteurization?

I've done smaller grows where I literally have to wring the water out of the shit with my hands to achieve a proper moisture content...call it TLC. I've never had luck just letting it hang in pillow case. I'd imagine based on where you live or the season and the RH it could take forever to dry this way if you have a lot of substrate. The longer it takes to dry the longer contaminates have to establish and fight your spawn, right? It would be better to dry as quickly as possible and use. So what do you guys suggest for this? I even tried a mop bucket squeezer that normally wrings out mops, it doesn't squeeze enough and the moisture content stays too high. Next step I was thinking of buying an industrial type clothes roller, putting the poo in a pillow case and rolling it through that to really wring the shit out of it...or rather wring the water out of the shit. I was also thinking of just starting to do oven pasteurization but I cant do as much at a time in the oven and I wanted to see what you guys think. Just trying to keep shit simple


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Offlinepolaritymind
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Re: Achieving proper moisture content after water bath pasteurization [Re: TH-E]
    #27056628 - 11/25/20 06:07 AM (3 years, 2 months ago)

I mean im not sure but couldnt you use the pillowcase to wring out more water  by making it very tight and then twisting the top part (empty sac) which would make it even tighter?


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OfflineTH-E
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Re: Achieving proper moisture content after water bath pasteurization [Re: polaritymind]
    #27056644 - 11/25/20 06:24 AM (3 years, 2 months ago)

I've tried this but when you have a lot of poo, like a whole pillow case, it doesn't work that great


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Offlinepolaritymind
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Re: Achieving proper moisture content after water bath pasteurization [Re: TH-E]
    #27056677 - 11/25/20 07:21 AM (3 years, 2 months ago)

How long do you let it sit? Maybe put something heavy and flat on it like a baking sheet with some rocks on it?


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InvisiblebodhisattaMDiscordReddit
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Re: Achieving proper moisture content after water bath pasteurization [Re: polaritymind]
    #27056705 - 11/25/20 08:01 AM (3 years, 2 months ago)

Start with the right moisture content and don't use a water bath :shrug:


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Re: Achieving proper moisture content after water bath pasteurization [Re: polaritymind]
    #27056706 - 11/25/20 08:02 AM (3 years, 2 months ago)

Water bath, to my mind, means a container of some sort sitting in heated water. Get your sub to field capacity, put it in container, put container in hot water, monitor sub temp until pasteurization is complete. Your sub should not have taken up extra water during the process, and can be spawned as soon as it cools. Your process sounds different. What are you currently doing?


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InvisibleRoger Clemency
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Re: Achieving proper moisture content after water bath pasteurization [Re: RoscoeReturns]
    #27056728 - 11/25/20 08:29 AM (3 years, 2 months ago)

The pillowcase method or anything like that is pretty old school and as you mentioned very inconvenient.

Starting with the proper moisture content is the way to go. I used hpoo for a long time because it was free and fun to collect where I got it but it’s not as consistent as using coir (which isn’t totally consistent either but the same brand should be close each time in moisture holding capacity). Using a bit more verm in the hpoo mix will give you more consistency once you figure out your water ratios.

If you’re just growing cubes though I’d use coir as the base instead of hpoo. It’s just much easier to deal with and provides the same or better results. You can use warm tap water or boiling water or even cold water for coir and be good to go. No worrying about staying in the 145-165 range and then cooling it down quickly


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OfflineTH-E
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Re: Achieving proper moisture content after water bath pasteurization [Re: RoscoeReturns]
    #27056862 - 11/25/20 10:03 AM (3 years, 2 months ago)

So I was submerging my substrate directly in the water and straining it after pasteurization. For the volume I'm working with finding a big enough container for a bath like you describe and evenly pasteurizing the substrate to the center is the problem. Could just do multiple smaller batches though.


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OfflineTH-E
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Re: Achieving proper moisture content after water bath pasteurization [Re: Roger Clemency]
    #27056876 - 11/25/20 10:09 AM (3 years, 2 months ago)

Yea I've done some coco coir grows. I live by a farm and get free grass fed, field aged Cpoo and and free straw so its convenient..in that regards. I feel like it's a shame not to take advantage of it but I hear what you're saying


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Re: Achieving proper moisture content after water bath pasteurization [Re: Roger Clemency]
    #27056885 - 11/25/20 10:16 AM (3 years, 2 months ago)

Also, I never worry too much about consistency in terms of retention, regardless of what tek I'm using I'll usually feel the mix out and add water accordingly...just that little bit of that TLC :wink: but I guess since we are talking about bulk people don't want to do that every time and want to know the best measuring cup mix for the best results


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Offlinepolaritymind
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Re: Achieving proper moisture content after water bath pasteurization [Re: TH-E]
    #27067879 - 12/02/20 09:42 AM (3 years, 1 month ago)

Well even with your farm substrates you can try to experiment with measuring cups, like maybe half a tub full of hpoo needs X amounts of cups of water, might be a start.


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Re: Achieving proper moisture content after water bath pasteurization [Re: polaritymind]
    #27085892 - 12/12/20 02:40 PM (3 years, 1 month ago)

I started doing oven pasteurization at 170 degrees for 3 hours in 20x17" pans. Each cooking pan can hold enough substrate for a tub and I can fit 4 in my oven. I really like it, so much easier and less messy than doing the whole submerged pillow case thing and I haven't had any contams yet. Manure x straw substrate I've found you can pretty much put in the oven at your desired moisture content (maybe a little bit over) and if you cover your pan with tinfoil nice and tight you get hardly any moisture loss...unlike with casings that seem to loose a lot of their moisture in the oven.


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