DIY Natural Gas co2 Generator

Yes We Canna! · Apr 2, 2010

Man its working amazing.
My PPMs are always at the max. My last yeild was at least 15-25% more than what I usually get. I was pleased to say the least!

tat2ue · Apr 2, 2010

hydroboy27 said:
up in my attic, there is a SOLID PIPE that goes up to a vent, out the top of my roof. I ASSUME that is my plumbing methane vent pipe.

That is the only one i can find coming up and out, so i assume thats not going to do me any good. Come to think of it, my water heater goes into the base of my chimney, so its going out that way i think. Methane doesnt help plants grow does it?

I don't believe that is a Methane pipe. An exhaust gas ven pipe/duct from a Gas hot water heater is usually a 4" galvinzed double wall solid duct pipe.

tat2ue · Apr 2, 2010

Yes We Canna! said:
Man its working amazing.
My PPMs are always at the max. My last yeild was at least 15-25% more than what I usually get. I was pleased to say the least!

Great news bro....Another helpful hint for this setup. Since there is really no regulation as to when the heater fires up to recharge the co2 I find that letting the hot water slowly trickle in a spare bathroom will fire my heater up once every couple hours while the lites are on as opposed to manually kicking it on. Once lites go out I just turn off the leaky faucet,,,FYI

hydroboy27 · Apr 2, 2010

yeah, this is a thick steel pipe that is in my attick, like plumbers pipe. My hot water heater hooks into my chimney

That 5hit · Apr 2, 2010

hydroboy27 said:
yeah, this is a thick steel pipe that is in my attick, like plumbers pipe. My hot water heater hooks into my chimney

a lot of them vent to a chimney :wall:

but you can still tap into it
re. to use the galv. pipe like the kind they use

Yes We Canna! · Apr 2, 2010

how hard is it to get to the chimney vent?
if its only a weekends work i'd suggest goin for it for sure.

hydroboy27 · Apr 3, 2010

k, it hooks into the chimeny in the basement obviously

The chimney does come up the side of the house, but where it does, the attic is super thin, like only a foot tall because it where the roof comes down. I dont know how id begin to try and hook into the chimney, its brick. Not to mention if i did, there would be so much other NON co2 air in there blowing around probably... so it might defeat the purpose. What do you think?

hydroboy27 · Apr 3, 2010

That 5hit said:
a lot of them vent to a chimney
but you can still tap into it
re. to use the galv. pipe like the kind they use

you lost me... it hooks into the chimney in the basement. The pipe is a methane pipe i believe and has nothing to do with it, and does not hook the the chimney. I was saying that this pipe is all that is in my attic, nothing else.

if i were to tap into the hot water tank line, it is down in the basement. Which brings me back to my original idea, if i had a 5/8 inch aeration hose, and some sort of pump attached... if i had a steady stream of co2 going up to my air tight room, i would think it would make a difference even tho it would just be a trickle of air.

tat2ue · Apr 3, 2010

hydroboy27 said:
up in my attic, there is a SOLID PIPE that goes up to a vent, out the top of my roof. I ASSUME that is my plumbing methane vent pipe.

That is the only one i can find coming up and out, so i assume thats not going to do me any good. Come to think of it, my water heater goes into the base of my chimney, so its going out that way i think. Methane doesnt help plants grow does it?

If that pipe your speaking of is black cast iron then it is your sewer gas evac line that expels built up sewer gases and keeps them from backing up into your house. Have you tried getting on your roof and looking for a galvanized cover attached to probably a 4" galvanized duct/pipe?

That 5hit · Apr 3, 2010

just tap into the pipe coming from the top of the water heater

hydroboy27 · Apr 3, 2010

That 5hit said:
just tap into the pipe coming from the top of the water heater

right, so now we are back to square one.

Would a 1/2 inch plastic aeration tube be enough, and what kind of pump could i attach to it, to have it send a constant trickle of co2 up to my attic room?

That 5hit · Apr 3, 2010

no
you can not use plastic
look at the pic on the left

hydroboy27 · Apr 3, 2010

right, because the air is hot, im going to use non meltable materials in the first several feet, but once the air gets up the pipe and cooled off a bit, im going to use a plastic line so that i can bend it and run it up through my walls with less hassle.

That 5hit · Apr 3, 2010

hydroboy27 said:
right, because the air is hot, im going to use non meltable materials in the first several feet, but once the air gets up the pipe and cooled off a bit, im going to use a plastic line so that i can bend it and run it up through my walls with less hassle.

.
IDK man this may work but i'm sure it is not suggested
just use the al. pipe the whole way

That 5hit · Apr 3, 2010

you sould check the temp of the line after each heavy hot water use (bath or shower)
this is when the water heater kicks on full blast
and the exhausted co2 filled air is at its hotest

tat2ue · Apr 4, 2010

That 5hit said:
you sould check the temp of the line after each heavy hot water use (bath or shower)
this is when the water heater kicks on full blast
and the exhausted co2 filled air is at its hotest

Hydroboy...is possible that you could post some pics of where you want to tap into and where you want it to end up at and a few pics of where it has to run. This way maybe 5hit and I could maybe put our heads together and possibly come up with a solution for you.

hydroboy27 · Apr 4, 2010

yeah, ill put it this way, all i got is a half inch to maybe an inch for diameter of a line that i can run up to the attic.

That being the case, and since i have to snake the line down through the walls, etc, it has to be flexible... and thus plastic.

I understand what you guys are saying about heat, but if i put a long enough hard pipe prior to going plastic, ill be fine, im not worried about that.

What i am trying to figure out is the best way to pump the air up.

notice i didnt say fan because with a half to an inch line, no fan is going to move air through 50-75 ft of half inch line. Thus i need a pump. I was thinknig about using a hottub pump, but have never had any experience with them before.

rzza · Apr 7, 2010

tattoo or shit, can one of you explain why i add a T to the ducting and continue to vent outside? why dont i just redirect the duct from exiting outside to exiting in my grow room and add a small duct fan?

That 5hit · Apr 7, 2010

rzza said:
tattoo or shit, can one of you explain why i add a T to the ducting and continue to vent outside? why dont i just redirect the duct from exiting outside to exiting in my grow room and add a small duct fan?

to much will build up
its like a fail safe
plants dont use much co2 at night
so if your just blowing in to the room with no exit at night it will over flow
you could instead you useing the "T" vent from the grow room to outside the house
i would have to co2 pumped in mid to low (around canopy height )
then vent out the ceiling or top of room

you would prolly have to play around with it but you could have the vent fans turn on at night and maybe 3 times through out the day, all of this opposite of the intake fans time

rzza · Apr 7, 2010

ok thanks dude.

DIY Natural Gas co2 Generator

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