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OfflineChronicBarry
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Registered: 08/15/04
Posts: 155
Loc: Bat Country
Last seen: 15 years, 9 months
RH and casings
    #8061345 - 02/23/08 04:49 PM (15 years, 11 months ago)

Ideally, the consensus for casings is have a RH of 88-91% humidity. What are the cons to having a RH closer to 100%. Induce contams?

The reason I ask is I set up my fruiting chamber for my tray of spawned coffee/coir. As I waited for my casing material to cool, I put the finishing touches on my FC. I put 2 inch and a half holes to each side to aid in FAE and added about a 1/4 inch of perlite. My hydrometer is reading about 95%.

Any advice?


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Offlinethedoc8
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Registered: 05/18/07
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Re: RH and casings [Re: ChronicBarry]
    #8061848 - 02/23/08 06:14 PM (15 years, 11 months ago)

I run 100% and plenty of fresh air and have only good results.


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OfflineRogerRabbitM
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Re: RH and casings [Re: thedoc8]
    #8062120 - 02/23/08 07:38 PM (15 years, 11 months ago)

Quote:


Ideally, the consensus for casings is have a RH of 88-91% humidity.




For at least the last several hundred times this exact question has come up, I've recommended 100% humidity or as close as you can get, regardless of whether the substrate is cased or uncased. This(lower humidity if cased) is another of the mistakes/outdated information in TMC that refuses to die.
RR


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InvisibleGretchenmeister
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Re: RH and casings [Re: RogerRabbit]
    #8062202 - 02/23/08 08:18 PM (15 years, 11 months ago)

Not to beat a dead horse...but since we are on the subject...again...I cannot get it through my brain how evaporation can occur if the rH is 100%...in relation to evap being a pinning trigger...and how one keeps rH at 100% and does not get overlay before pins happen?..especially with non cased substrate...like my favorite naked poo blocks.


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OfflineRogerRabbitM
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Re: RH and casings [Re: Gretchenmeister]
    #8062280 - 02/23/08 08:53 PM (15 years, 11 months ago)

It's hard to get total saturation humidity with lots of air exchange. At 99% humidity with five to six air exchanges per hour as recommended, a casing layer will dry out daily and this moisture needs to be replaced by misting.
RR


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OfflineChronicBarry
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Registered: 08/15/04
Posts: 155
Loc: Bat Country
Last seen: 15 years, 9 months
Re: RH and casings [Re: RogerRabbit]
    #8062335 - 02/23/08 09:12 PM (15 years, 11 months ago)

Sorry to be the one beating a dead horse but my last grow was 2 yrs ago with cakes. I just cased the sub. I'll wait a couple days, patch, then put it in the FC. I'll just make sure to fan often.


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