how often do you estimate having to refill? how much longer do you estimate to harvest completion? what are you growing?

I'm just growing bagseed, so don't think compressed co2 is even a viable solution for me, all thing being equal.

__________________
all comments are hypothetical, fictional, or just plain bullshit, they are for entertainment purposes only. all photos were procured from the internet, they are not my own. Photo Album....http://www.rollitup.org/members/onenumcat-albums.html

honestly, I don't know anything. I am assuming that when I can't see a reaction in the solution any longer, that there is no reaction. its like baking soda and vinegar, put baking soda in a container, pour vinegar on it and watch it bubble. if that reaction stops try pouring more vinegar in it, if there are more bubbles...its still working. pour more vinegar in it and if there aren't any bubbles, then its not producing co2.

by the way, I'm growing 12 plants in a small room. I wish I could get the compressed co2, really. this, cheap, method is good enough for me. I'd assume a bookcase arrangement wouldn't have more than 3 plants, so this would probably work, and be a better economic solution, for you. or one of the other cheap solutions, ie; vinegar + baking soda(or whatever you call it where you're from, lol), yeast + sugar(or corn syrup, molasses), and water. also, burning kerosene or natural gas produces co2. so does gasoline and diesel, but they include carbon monoxide...probably kill yer plants, besides running yer lawnmower in yer room probably ain't too smart, lol!

__________________
all comments are hypothetical, fictional, or just plain bullshit, they are for entertainment purposes only. all photos were procured from the internet, they are not my own. Photo Album....http://www.rollitup.org/members/onenumcat-albums.html

seems seltzer water would go flat in a matter of hours, like a coke. just a thought. also, how much seltzer water would you calculate a person would need per plant, per hour. I don't wanna even try to calculate that, but it seems it would run into a lot more $ than I wanna spend and I'm not sure it would be effective.

keep in mind though, this is all just a theory for me. I do know this solution, chemically, produces co2. that is the one thing I do know, lol.

my cost now is only for sugar...that stuff is real cheap. I think I'm buying/will buy, about a kilo of sugar every couple of weeks. it may total a dollar or two a week...pee is free!

__________________
all comments are hypothetical, fictional, or just plain bullshit, they are for entertainment purposes only. all photos were procured from the internet, they are not my own. Photo Album....http://www.rollitup.org/members/onenumcat-albums.html

well for 800 cubic centimeters it takes .2(some pressure measurment used on the regulator) for 15 minutes per hour to max the room at 1500ppm(with leakage considered) this is 5 times the amount of co2 in the air. this can promote growth up to 6 times faster;maybe i misunderstood your question of what am i growing but it really doesn't matter what your growing as long at it's a plant. CO2 increases the rate of photosynthesis for any plant which in turn creates faster growth. as for how often the tank need to be refilled, i'd say 4 to 5 months(with constant on and off usage) maybe longer, i'm still on my first tank, been using it for about two weeks and it feels just as heavy as the day i brought it.

__________________
I'm a very good liar
http://www.rollitup.org/general-mari...blueberry.html

ha yea, a lawnmower anywhere besides outside isn't a good idea. and the bookcase is just for my seedlings(basically anything under and around a foot) very cramped, i haven't figured out what i'm going to do when they get bigger because my other plants will be flowering

__________________
I'm a very good liar
http://www.rollitup.org/general-mari...blueberry.html

yea im not too sure about the seltzer, i just read about it in the FAQ part of a growing book so i'd figure i'd try it

__________________
I'm a very good liar
http://www.rollitup.org/general-mari...blueberry.html

http://www.mclendons.com/img/products/04/045010.jpg

modify it to fit in a old pc case with the back side away from the plants open.....co2 generator

__________________
supercalavagalisticexpialadankbitch... my styles tight like OJ's glove

yeah, propane is a natural gas. that will create co2. might be a little expensive though...

I guess any open flame in your grow room would be hazardous. when I burn the kerosene I'm always in the room and turn it off when I leave. I was just in there for about 20 min...sweatin like a pig...about 86 degrees, but I prefer around 75...

__________________
all comments are hypothetical, fictional, or just plain bullshit, they are for entertainment purposes only. all photos were procured from the internet, they are not my own. Photo Album....http://www.rollitup.org/members/onenumcat-albums.html

same basic concept for a lot les money you just gotta do it right and not burn your grow room down

http://www.htgsupply.com/viewproduct...roductID=51660

__________________
supercalavagalisticexpialadankbitch... my styles tight like OJ's glove

what are you bruning kerosene for? hazardous/toxic. what your doing is pointless if it's for CO2, if you dont have a consistent stream of co2 the plants will not be affected. you wont be around every hour to regulate it(which is probably how you should measure your room's depletion) which is why i bought the regulator

__________________
I'm a very good liar
http://www.rollitup.org/general-mari...blueberry.html