Grow room area: 30000 cubic feet
Amount of CO2 required: 36 cubic feet
On time: 216 minutes
At this flow rate:10
If you are using a 20 pound CO2 bottle with a regulator, it will last 17.5 hours.
If you have a CO2 Generator a 5 gallon propane tank will last 54 hours.
that^^^^ was just done using a flow rate of 10 on the regulator,so its saying you will run out in 17.5 hours and i had it set to 1200ppm added.
heres the link to the calculator https://www.hydroponics.net/learn/co2_calculator.asp
basically i think your gunna need alot bigger bottles :) this is something i would talk to texas kid about,i seen he was using like 50# bottles all tied together.
I based my calculation on the fact that his 400 sqft room I am guessing is a 8 foot ceiling, guessing he setup up the CO2 the same as his other room
Yeah but that flow rate is too low for this size room.666mins is 11.5 hours so thats how long it would take to fill the room 1 time, the plants would use it faster than its filling.even a flow rate of 10 is too slow for this room imo, he should have 2 or more regulators going.plus with faster/higher flow rates you risk freeze ups on the regulator.
You should be able to hook up both tanks to your controller as long as they both have regulators.maybe some type of splitter is required. @Texas Kid would prolly have these answers, maybe he will pop in now that I tagged him :)
I think you need this.
http://ico2.com/CARBOCOUPLER.htm
Or a tank cart for your big tank, welding gas supply should be able to set you up with a manifold system or point you in the right direction, or if you don't mind having a truck show up look into a mini bulk system, prolly be cheaper in the long run and you wouldn't have to run around all over the place.
I still dont think a 20lb bottle a day in a 2000 sg ft room is bad and i may be wrong on this but a 20lb bottle of co2 is like 175 cubic ft so if your burning through 33 cu ft an hour just do the math its not that many hours.Remember also when it first comes on its got to run a long time just to bring the ppms up to the set point before it starts cycling.
I dont think you can run two bottles off 1 controller because at the other side of the grow it will be totally different,how many lights are you burning in 2k sq ft?50+?and your worried about adding another $500 controller?
BTW i think most people with large rooms use 50lb tanks,their still heavy though.
I think you need this.
http://ico2.com/CARBOCOUPLER.htm
Or a tank cart for your big tank, welding gas supply should be able to set you up with a manifold system or point you in the right direction, or if you don't mind having a truck show up look into a mini bulk system, prolly be cheaper in the long run and you wouldn't have to run around all over the place.
I run (12) 250 gallon tanks into a manifold and then a single regulator on the outbound side to feed the individual controllers in each space...on a 2 or 3 tank setup you can easily daisy chain your tanks with a pressure "T" or a 2 or 3 nib manifold. I would look in the automotive side of things for a cheap manifold with AN fitting configurations either for a fuel system regulator like used on dual carbs or NOS setups, usually real cheap and easy to find.
Earls or Aeroqip fuel distribution blocks will make it easy and you can probably daisy chain a few tanks for about $30 bucks
http://www.jegs.com/i/Magnafuel/665...kesBDh-stk7T8TYuz_E16bNmwIOkj2qKwgaAhff8P8HAQ
Look at that nice man refilling your CO2, no tanks to haul around, your back is thanking you, and so is your wallet.
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