boss429

you'll have to keep bringing fresh air in until you add co2 but once you do i would recycle the air inside the box to keep the a/c from running quite as much.

JinpachiMishima

After bringing in CO2 you will definitely need some atmosphere controls added. You need to contineously measure the CO2 content in the grow area. If it is ventilated too much there will be no effect from CO2 - this is the trickiest part after CO2 addition...so the exhaust will need to be triggered automaticaly at certain times as well as the AC unit.

waterboy

Thanks for the input. Here is where my research into carbon dioxide has led me. The formulas I used came from "Gardening Indoors with Co2" by Van Patten.

My grow closet is 38cu.ft. using the formula (cu.ft x 0.0012) shows that I need about 0.05 cu.ft. of carbon dioxide per cycle. Since 8.7 cu.ft of carbon dioxide weighs one pound I should get 174 cycles per lb of Co2, or 3480 cycles per 20lb cylinder of Co2. 10 cycles a day for almost a year. Very cheap must be a problem.

Is there a flow meter that can deliver accurate quantities at this low a flo rate? I need to stay in the $150 range, but I will not need a monitor or a cylinder, just the flow set-up. At these rates perhaps I would be better of using the yeast sugar method or one of the other diy carbon dioxide producing mixtures? Thanks

boss429

if you seal the room i'm not sure fermenting by-products will be enough.
if you still have exhaust and intake with the outside air then you don't need to worry about it but the fermenting method might enhance your grow.

not sure about the flow question i've never used one of those big co2 tanks...that is the way to go for saving money, i'm told...

OrganicOdins420

exactly

BigTigga

I got some thing for ya. get both ac and chiller. I have seen cheap chillers. And put the chiller by the Ac unit blowing in.
Then get Co2 and the works. Its expensive. But once you got it its allllllllll down hill from there... for the most part

__________________
Energy=MassxLight2

AN AEROPONIC GROW JOURNAL SUCCESS 203 G. 11 plants
click below
http://www.gardenscure.com/420/hydro...w-journal.html

boss429

link me to cheap chillers i really want one!

this is the cheapest one i've seen and it's $160 before shipping...not my idea of cheap...
CoolWorks IceProbe Aquarium Chillers Nano Chiller Nano Cube Chiller Fish Tank Chiller

BigTigga

well... how big is your res

__________________
Energy=MassxLight2

AN AEROPONIC GROW JOURNAL SUCCESS 203 G. 11 plants
click below
http://www.gardenscure.com/420/hydro...w-journal.html

boss429

ten gal

kawgomoo

you can always get a small heater core from a car {new not used} clean it out with acid, put a pc fan on it and use a small pump to circulate the res water through it. this is how i cool my pc, costs maybe 40 bucks and it works great. if it can keep an overclocker cool, it can keep your res cool too!! heater cores are just little tiny radiators. they are small enough to fit in a pc case, they are small enough for your grow. also they can be located outside the cab, or in a dark area in the cab that is cooler than directly under the light.

the aquarium coolers are peltier cooler chip things... you can easily build one yourself for a couple bucks. all you need is the peltier "chip" ebay... 4-10 bucks. some sort of heatsink that gets stuck in the water.. thats what the probe part is, just a heatsink. take a computer heatsink, put the cold side of the chip to the heatsink and get that sink in the water.. the hot side of the chip will need a heatsink and fan to keep it cool. this too will cost you about 40 bucks

dont forget to paint your res WHITE! its cool if you painted it black to light proof it, but paint it white afterall to reflect some light... make sure the top is white or use that reflective insulation from home depot to keep the heat out the res.

really bad ass computers use a mix.. they put a peltier chip on the cpu to keep it cold, and use the water cooling to keep the peltier chip from melting down.

peltier chips are the active ingredient in coleman hot/cold coolers and anything else that cools shit down and runs off 12vdc current. since you can flip the chip or flip the current they can be used to cool or heat anything.