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OfflineOneU
Registered: 03/19/11
Posts: 763
Last seen: 11 years, 11 months
SGFC humidity?
    #14472871 - 05/18/11 11:45 AM (12 years, 8 months ago)

So the problem is that with the lid on properly (and holes drilled into it) the humidity drops quickly from (I assume) the heat of the 2 florescent lights. When the lid is cracked open, the humidity rises to the ~97-99% we want it to.

I am wondering if there is a chance of contam if the lid is cracked open 24/7 if it makes a significant change in the humidity.

Thanks in advance :mushroom2:


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InvisibleTranscendingLife
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Re: SGFC humidity? [Re: OneU]
    #14472885 - 05/18/11 11:47 AM (12 years, 8 months ago)

No more of a chance of a contam w/ the lid off than on.

We all grow mushrooms, once in Fruiting Conditions, in natural dirty air. Once the mushrooms have fully colonized your substrate/BRF/Grain, it's extremely hard for contams to move in.


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OfflineOneU
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Re: SGFC humidity? [Re: TranscendingLife]
    #14472902 - 05/18/11 11:50 AM (12 years, 8 months ago)

Alright cool thanks a lot todlow. You are really helpful.

Any tips if everything is to the tek (perlite, holes, fanning/misting, etc.) to keep humidity up? It's really odd that it drops like this. Maybe the perlite should be misted more often than 1-2 a day?


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Re: SGFC humidity? [Re: OneU]
    #14472924 - 05/18/11 11:54 AM (12 years, 8 months ago)

You fully hydrated your perlite before putting it into the SGFC, right?

IDK why your humidity isn't staying up, maybe the air isn't flowing from the bottom of your tub up to the top. Make sure you have the tub a few inches off the ground. Just raise it up using some cups or jars.


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AMU: We Quickly Answer Questions Here
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InvisibleLuger0815
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Re: SGFC humidity? [Re: TranscendingLife]
    #14472950 - 05/18/11 11:59 AM (12 years, 8 months ago)

Also a humidity of 95% is more ideal, because then a slight evaporation happens.
Evap. is the main pinning trigger.


Edited by Luger0815 (05/18/11 12:00 PM)


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OfflineOneU
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Re: SGFC humidity? [Re: Luger0815]
    #14472977 - 05/18/11 12:07 PM (12 years, 8 months ago)

Yeah it was moisturized, fluffed, 5 inches, on top of 2 blocks, it's getting airflow regularly. It keeps dropping after ~1 hour of not misting. I'll turn off one of the CFL lights maybe that is evaporating too much moisture :shrug:

Really odd because the temp in there is ~71-72 at the most and at night 67 which is good for them. The hygrometer is accurate and even if it wasn't, it drops from the 'max' so idk it's just happened recently which is odd because nothing has changed. It's misted even more I would think.


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Offlinesteelmonkey
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Re: SGFC humidity? [Re: OneU]
    #14473022 - 05/18/11 12:16 PM (12 years, 8 months ago)

How big are your holes? it kinda sounds like your not getting enough airflow to cause evaporation to raise humidity


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InvisibleLuger0815
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Re: SGFC humidity? [Re: OneU]
    #14473028 - 05/18/11 12:17 PM (12 years, 8 months ago)

IME, it is much more easy, to get a monotub running, than a SGFC with cakes.
Maybe its time time move to mono tubs.


Edited by Luger0815 (05/18/11 12:17 PM)


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OfflineOneU
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Re: SGFC humidity? [Re: OneU]
    #14473035 - 05/18/11 12:19 PM (12 years, 8 months ago)

Maybe but yeah the holes are 1/4" as well. Literally, everything is to tek. I tried moving one of the lamps a little bit farther to see if that was the cause so we'll see.


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Offlinesteelmonkey
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Re: SGFC humidity? [Re: OneU]
    #14473105 - 05/18/11 12:37 PM (12 years, 8 months ago)

Pheraps point a fan at it inderectly to get better airflow which will increase humidity


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Offlinek00laid
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Re: SGFC humidity? [Re: steelmonkey]
    #14473130 - 05/18/11 12:45 PM (12 years, 8 months ago)

try misting more, rather than more often.

i suspect your perlite is drier than you think.

give er a good spray in the morning and just see how it goes.


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OfflineRoastedPete
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Re: SGFC humidity? [Re: k00laid]
    #14473218 - 05/18/11 01:05 PM (12 years, 8 months ago)

You could try to increase the relative humidity in the room where you keep the bin. THe SGFC works best in rooms where the ambient RH is above 30%, but that is the bare minimum, and in cooler temps I imagine that there would be less water evaporating from the perlite, which would result in poor RH.

I was having problems keeping the humidity at a constant level in my SGFC; everything was to the tek, but I could not get the the humidity to stay above 90%. I bought a small cool mist humidifier for the room, ran in as much as possible, and didn't have a problem after that :]

Hope that helps! Best of luck :]


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OfflineOneU
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Re: SGFC humidity? [Re: RoastedPete]
    #14473257 - 05/18/11 01:13 PM (12 years, 8 months ago)

Thanks all of you but it is misted a lot and quite often. The mister is a good one, the room's rH is ~45 and it does have great airflow. The fan has been tried but it dries it out very quickly.

It's just not right for it to be this way. The perlite has only been in use for about three weeks and RR says up to 2 months is ok so that shouldn't be it. The airflow is also not a problem but I will try the fan thing again but the lights didn't make much of a difference.

:feelsbadman:


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OfflineMushaboom
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Re: SGFC humidity? [Re: OneU]
    #14473362 - 05/18/11 01:36 PM (12 years, 8 months ago)

This is why I personally don't use a SGFC, just perlite and light misting/fanning a couple of times per day. If it has been 3 weeks you may want to spray the perlite a little bit. I'm sure it is still moist beneath the top surface but I would go ahead and spray the top layer to see if it helps.:sunny:


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Edited by Mushaboom (05/18/11 01:37 PM)


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OfflineRoastedPete
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Re: SGFC humidity? [Re: OneU]
    #14473476 - 05/18/11 02:01 PM (12 years, 8 months ago)

Quote:

OneU said:
Thanks all of you but it is misted a lot and quite often. The mister is a good one, the room's rH is ~45 and it does have great airflow. The fan has been tried but it dries it out very quickly.






Could be an issue with temperature. Maybe there isn't enough water evaporating from the perlite quick enough to replenish the moisture in the rest of the tub that is being lost with the FAE. It may be dry where the cakes, but I bet the perlite is still pretty moist.

I may be wrong though, but in my mind, this makes sense...

Either way my vote is still for a humidifier--worked like a charm until I stopped using it :]


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OfflineOneU
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Re: SGFC humidity? [Re: RoastedPete]
    #14474102 - 05/18/11 04:12 PM (12 years, 8 months ago)

That is a good idea. I have no work for the next couple of days so we need to figure this out before hand.

So I should fan more or raise temps? Raising temps is not ideal for me as I would have to go out and get a heater, set it up properly with thermostat (a headache tbh). I have read of many people doing it in lower 60s, mine is just I'd think about 68 ish constantly and the cakes should be warming each other up.

I have:

Humidifier in the room
Blocks under SGFC
Proper lighting
Fanning/misting properly
5 inches of perlite
Proper holes (size and placement)
An open space

Seems like everything :uhoh:


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OfflineRoastedPete
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Re: SGFC humidity? [Re: OneU]
    #14474652 - 05/18/11 06:16 PM (12 years, 8 months ago)

Seems like you do have everything...

If raising the temps is an issue, fanning more could work. How are you fanning? Do you do it manually, or have an electric fan pointed toward the bin? Is it on a timer?

You could also try putting your fan really close to your fruiting chamber, but have it pointing away. This way a small vacuum will be created inside of the  and air will be forced in through all directions.


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OfflineOneU
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Re: SGFC humidity? [Re: RoastedPete]
    #14474661 - 05/18/11 06:19 PM (12 years, 8 months ago)

Yeah I fan manually and it's just REALLY weird because NOTHING has changed. Everything being done now worked great before other than the fact that there is more cakes in the FC. They are spaced according (about a cake apart) and it's just really odd.

Could it be due to so many cakes absorbing the moisture? Fahtster stacks cakes in a small FC so I doubt that is the problem :shrug:


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Offlinesteelmonkey
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Re: SGFC humidity? [Re: OneU]
    #14474776 - 05/18/11 06:40 PM (12 years, 8 months ago)

More cakes means your fruiting chamber will hold humidity better,I'm sticking with not enough airflow,thats why when you crack your lid your humidity rises.You need airflow to evaporate the moisture in the perlite which increases the humidity,its basically how humidifiers work


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OfflineRoastedPete
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Re: SGFC humidity? [Re: OneU]
    #14474794 - 05/18/11 06:43 PM (12 years, 8 months ago)

I had 10 cakes--fruited like champs, threw 10 more in there and I was getting all sorts of weird mutants and stunted growth from all of them.

Weird stuff.

hope the speculation helped, best of luck friend!


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