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InvisibleRahz
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1.3 air exchanges per hour. Good?
    #6302228 - 11/20/06 12:21 PM (14 years, 5 months ago)

Just looking for opinions. 1.3 air exchanges per hour... in a clean environment. Is it enough?

rahz


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InvisibleBlutjager
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Re: 1.3 air exchanges per hour. Good? [Re: Rahz]
    #6302304 - 11/20/06 12:45 PM (14 years, 5 months ago)

Sounds good to me,its more than my casings get,just watch out they dont get dried out


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Invisibleagar
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Re: 1.3 air exchanges per hour. Good? [Re: Rahz]
    #6302338 - 11/20/06 12:54 PM (14 years, 5 months ago)

I have found that substrate MASS in a fruiting chamber makes a big difference.

24 cubic ft of grow space

Should be okay with 25 cfm fan ran a couple minutes per hour.

But, with that 24 cubic ft full of trays.
I have found MORE is better.
Trouble is, running FAE alone, tends to lower Rh dramatically.

To remedy that, if you can charge FAE with HIGH Rh, you do far better.

I run this 15 minutes, every 3 hours.


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OfflineRogerRabbitM
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Re: 1.3 air exchanges per hour. Good? [Re: agar]
    #6302384 - 11/20/06 01:10 PM (14 years, 5 months ago)

You want about 4 air exchanges per hour if it's in fruiting mode, so watch your humidity as agar said and be sure to replace the moisture you lose to FAE.
RR


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InvisibleRahz
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Re: 1.3 air exchanges per hour. Good? [Re: RogerRabbit]
    #6302479 - 11/20/06 01:43 PM (14 years, 5 months ago)

Hmm, well, I was hopeing to hear "1.3 is fine" :grin:

Still, my setup is almost complete. I'm going to see what 1.3 exchanges per hour will do and mod from there if I need to.

What I'm not fully sure of are the specifics of what the FAE is for. I have CO2 removal covered, it's not an issue. I would think that 1.3 exchanges would supply decent oxygen for mushroom growth, and since I have CO2 vents, oxygen needs should be covered too. I understand that higher FAE reduces the possibility of contams, but there again, 1.3 exchanges and CO2 vents should supply plenty of oxygen.

I'm assuming the contam resistance is related to oxygen levels and not simply "exchange". Does that sound right? Or can you have stale air that's still well oxygenated?

I wonder how many air exchanges per hour polyfil holes provide?

rahz


--------------------
rahz

comfort pleasure power love truth awareness peace


“I want to die peacefully in my sleep like my grandfather did. Not screaming in terror like the passengers in his car."


Edited by Rahz (11/20/06 01:45 PM)


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InvisibleRahz
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Re: 1.3 air exchanges per hour. Good? [Re: Blutjager]
    #6302502 - 11/20/06 01:47 PM (14 years, 5 months ago)

>>>>Sounds good to me,its more than my casings get,just watch out they dont get dried out

hmm, 1.3 is kinda low, how much exchange do your mushies get? Just curious what kind of delivery system you use.

I've got humidity covered via an ultrasonic hooked to a repeat cycle timer. I should be able to dial the humidity in to any level I want.

rahz


--------------------
rahz

comfort pleasure power love truth awareness peace


“I want to die peacefully in my sleep like my grandfather did. Not screaming in terror like the passengers in his car."


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InvisibleRahz
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Re: 1.3 air exchanges per hour. Good? [Re: Rahz]
    #6302549 - 11/20/06 02:02 PM (14 years, 5 months ago)

Another thing I'm curious about. Let's say I do 1 air exchange. In reality, I've only done .5 air exchanges right? Because on average, 1/2 the air you pumped in will be the air that get's pumped out. So when speaking of air exchanges, are we talking absolute ammounts, or a relative ammount based on how much of the original air is retained?

2 air exchanges would, in theory, leave 25% of the original air. 3 air exchanges would leave 12.5% of the original air and 4 air exchanges would leave 6.25% of the original air... which makes Roger's suggestion of 4 exchanges per hour seem pretty smart.

Anyway, my setup will be done sometime today, I'll post pics when it's fully assembled... and then shut up about it until I get my first harvest.

Progress as of last night:



rahz


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rahz

comfort pleasure power love truth awareness peace


“I want to die peacefully in my sleep like my grandfather did. Not screaming in terror like the passengers in his car."


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OfflineHippieChick
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Re: 1.3 air exchanges per hour. Good? [Re: Rahz]
    #6302597 - 11/20/06 02:26 PM (14 years, 5 months ago)

I was bored the other night and decided to try to find out how good a job my GH's were doing with FAE .

I turned the US on inside my cool mist and let my GH fill with fog



then I turned off the US and took a pic every minute till it was clear again





and clear again after 10  minutes



:thumbup:


Figure that means 6 per hour . :grin:

I run the CM 24/7 and the US around 20 hours a day .
Seems to be working quite well .

Every couple of days I might have to tip one or 2 of my casings that get a little water build up in the bottom , but I can tip the whole GH worth in a minute or two if need be .

Peace,Love,Happiness and Harmony
:heart: Hippie "the dyke" Chick  :mushroom2: LOL


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InvisibleRahz
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Re: 1.3 air exchanges per hour. Good? [Re: HippieChick]
    #6302663 - 11/20/06 02:48 PM (14 years, 5 months ago)

>>>>I run the CM 24/7 and the US around 20 hours a day .

That's intresting. If I can run my ultrasonic that long, it could give me 2-3 exchanges per hour with my current setup.

20 hours a day, and draining casings. You're fearless :cool: Do you add peroxide in your water?

Thanks, this post has given me the courage to push my ultrasonic hard and find some limits.

rahz


--------------------
rahz

comfort pleasure power love truth awareness peace


“I want to die peacefully in my sleep like my grandfather did. Not screaming in terror like the passengers in his car."


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