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 BlueIndian
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Registered: 01/17/10
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 optimal co2 levels? 
#11948272 - 02/02/10 04:46 PM (3 years, 4 months ago) |
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Sorry.....checked other posts but haven`t found specifics. Currently running a FC with hydroton and air stones. There are 20 1/2 inch holes drilled filled with polyfill. The house is old and stays dusty no matter how much you clean and the dog sheds like crazy. That`s why I used the polyfill. The cakes aren`t pinning as well as expected so I took some polyfill out. However....I checked the co2 level and it is running about 2000-2500 ppm. What is the ideal level of co2? Guess I`ll have to take out some more poly but don`t want to lose humidity. I do have micropore tape I could use if that will allow more fae. I had hoped the air pump would help with the fae and eliminate fanning altogether. Help me get this balanced so I don`t have to be a slave to this thing!
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 Jiggle
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Registered: 01/13/10
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Sounds to me like your CO2 levels are a bit on the high side, I'd say fan a little bit more..I grow in a walk in closet plants on one side and mushrooms on the other, they seem to cancel each other out nicely..
Also, what kind of FC are you using? Because beleive it or not the whole theory on SG FC's is that the more holes you have the higher the humidity. Sometimes simplicity is the best answer.
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BlueIndian
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Re: optimal co2 levels? [Re: Jiggle]
#11948386 - 02/02/10 05:08 PM (3 years, 4 months ago) |
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I`m sure they are on the high side jiggle. Ambient level is something like 300ppm these days. Nice that you can do the plants and shrooms in the same area.....have wondered about that but plants can have other fungus/mildew so I haven`t taken that chance. See if I can show a pic of the fc.....
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punkrocker292004
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you need holes near the bottom
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JonEveryman88
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First of all, take that damn poly-fill out, and replug the majority of those holes. What's happening is, instead of fresh humid air being circulated throughout the FC, it's getting expelled too quickly through those holes in the side. Plus, you're not getting enough pressure build-up in the chamber to allow for gases to be mixed efficiently.
Second, don't put any holes on the bottom. It's a myth that CO2 will settle to ground level. I'd be dead right now if it were true.
Third, check your airstones for any blockage of air outlets, and check your air pump/hose for clogs.
Polyfilling holes in an automated air exchange fruiting chamber to prevent contaminates entering is pointless. If any dirty air is gonna enter your FC, it'll be through the pump and airs stones.
Cover all the holes in the sides or bottom, and drill some holes in the lid.
1/2 inch holes, 3 at the max, is good on the lid. This will allow proper aeration of the fruiting chamber while maintaining a slight pressure which will help keep out contaminates, as long as you have secured the air pump in a sterile environment( I put mine in an empty 1.3 litre can of apple juice, cut some 1/2 holes for the tubing, then cut a hole in it's lid and afix a HEPA filter. I then soder on the lid, but hot glue works too).
Edited by JonEveryman88 (02/02/10 05:43 PM)
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BlueIndian
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Yeah...that would prob help punkrocker. I realize co2 is heavier than air and tends to settle.....wouldn`t hurt. After removing about half the poly I tested and the level had dropped to 2000ppm. It was my last rae tube tester I have. Guess I`m going to get a decent hygrometer and insure the humidity is right after removing so much poly. I do have a habit of packing the holes kind of tight. The small pins do seem happier in the short time period the poly`s been out though! Just frustrating. Not all the cakes were birthed at the same time but in about a week it`s only kicked out maybe 8 dried grams. At this rate, they are being consumed faster than they are growing!
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JonEveryman88
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Quote:
I realize co2 is heavier than air and tends to settle
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BlueIndian
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Jon....in indoor plant cultivation co2 tanks/generators are used to increase co2 levels to 1500-2000 ppms. Every suggestion is to suspend the delivery tubing over the canopy so that it will 'fall' and can be respirated by the plant. If you can show me data that contradicts that please do. And I`m not so much here to debate the gravity of co2 but WHAT is the acceptable range of the level??
I wholeheartedly feel the terrarium has been building 'pressure' in the fact that the poly was in quite snug. And if there were no pressure, the co2 level wouldn`t be 8x`s what ambient is. True or no?
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JonEveryman88
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Quote:
BlueIndian said:
Jon....in indoor plant cultivation co2 tanks/generators are used to increase co2 levels to 1500-2000 ppms. Every suggestion is to suspend the delivery tubing over the canopy so that it will 'fall' and can be respirated by the plant. If you can show me data that contradicts that please do. And I`m not so much here to debate the gravity of co2 but WHAT is the acceptable range of the level??
I wholeheartedly feel the terrarium has been building 'pressure' in the fact that the poly was in quite snug. And if there were no pressure, the co2 level wouldn`t be 8x`s what ambient is. True or no?
What you fail to realize is:
1)That co2 from a dewar/generator is cooler then Room temperature/Fruiting chamber co2, causing it to "fall" due to the fact that warm air rises and cool air sinks.
2)That co2 from a tank/generator is of higher concentration then that found in an FC, and a higher concentration of co2 does tend to sink, if left without any disturbances in the air(ie, a door opening, wavings your hand, whatever)
3)The reason it "falls" to the ground is because cold, concentrated co2 will sink fast.
4)Just because you think it's building up pressure doesn't mean it is. As I said, too many holes and it'll just vent out too quick.
And I never said there was no pressure, I said there was likely not enough to facilitate proper mixing of gases.
I'm not trying to be a dick, just trying to help.
I imagine if you can stick your head in your terrarium for 45 seconds and not suffocate, your CO2 levels are low enough for shrooms.
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Jiggle
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Quote:
JonEveryman88 said:
Quote:
I realize co2 is heavier than air and tends to settle
Actually, CO2 is a heavy gas that does tend to fall to the ground which is why it's suggested that you punch holes in the bottom of your FC and suspend it, not only that, but by some super scientific process on the SG FC tek, the air coming up through the holes helps raise the humidity.
I also thought 300ppm was too low for normal, I thought it was somewhere like 650ppm course I live in an area where there's quite literal smog formed by factories and the fact we don't do car inspections here.So I'd say you'd be fine at something like 1100ppm, but either way 2000 ppm is too high.
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JonEveryman88
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Re: optimal co2 levels? [Re: Jiggle]
#11948873 - 02/02/10 06:24 PM (3 years, 4 months ago) |
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Quote:
Actually, CO2 is a heavy gas that does tend to fall to the ground which is why it's suggested that you punch holes in the bottom of your FC and suspend it, not only that, but by some super scientific process on the SG FC tek, the air coming up through the holes helps raise the humidity.
Actually, the reason the SG FC works is because the air inside the fruiting chamber is cooler then air outside the FC due to the perlite, creating a pressure difference due to the fact that cold and warm air are of different densities.
CO2 is not so much heavier, but more denser. And it DOES tend to fall to the ground, but only when it is at quite low temperatures. If co2 were to work in the process you described above, I would have suffocated in my basement apartment a LONG time ago.
And the reason we punch holes in the SG FC's bottom is to assist in the wicking of moisture, not drain co2.
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feelfunny
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i dont care how it works i just know you put holes in ALL the fucking sides and top and bottem and it fucking sucks
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JonEveryman88
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Re: optimal co2 levels? [Re: feelfunny]
#11948931 - 02/02/10 06:31 PM (3 years, 4 months ago) |
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Quote:
feelfunny said:
i dont care how it works i just know you put holes in ALL the fucking sides and top and bottem and it fucking sucks
Yes, that works very well..in a shotgun fruiting chamber with perlite for humidifying
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BlueIndian
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Re: optimal co2 levels? [Re: Jiggle]
#11948947 - 02/02/10 06:33 PM (3 years, 4 months ago) |
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LMAO......thanks Jon. "If you stick your head in the terrarium for 45 seconds and don`t suffocate, yor co2 levels are low enough for shrooms." So....I can scratch buying that hygrometer to check humidity as my glasses will fog up while checking the co2 level!?  Seriously...thanks for trying to help but I didn`t just use my last rae tubes for no reason. With all the experience and knowledge of this site someone HAS to have this info.
Hey jiggles. About a decade ago the normal co2 levels were about 200ppm but with the GH effect I`ve heard it is somewhere around 300ppm now. From my experience in plants, supplementing to 1200-1500 is ideal if other conditions are optimal. Over that much I hear it can have a damaging or negative effect. SOoooooooooo......gotta be a level wheretoo much is too much for shrooms too! Sooo....what is it?!?
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