Co2 Room Calculation Help Please!

[criom]

alo alo

i have a 20 pound co2 tank and the hydrofarm small room regulator.

my space is 3x3x6 = 36 cubic feet, so what should i set the CFH flow meter to? my model goes from .1 to 2

how long should i run the cycles for? the timer that came with it has 15 minute periods, but according to the online co2 calculator i should only be running it for 3 minutes.

should i run the tubing above the canopy or into the scrog screen?

is a 400 watt MH light enough to reap the full benefits of co2 for this space? i can add another 250 watts if neccesary.

should i be running exhaust cycles at all?



also: in the instructions it says to run the system for 3 hours continuously after the lights come on, should i do this or stick to a shorter cycle?


any help would be greatly appreciated :hippy:

[doco]

I don't know anything about your CO2 question but Im coming up with 54 cubic feet for that area

[doco]

According to this website: CO2 Calculator - Greentrees Hydroponics (http://www.hydroponics.net/learn/co2_calculator.asp)

you should set it for 1 cfh to acheive 1500ppm for that space

[criom]

sorry i meant 3x2x6...

even still that calculator does not go below 1 CFH, and my timers are on 15 minute increments...

so to run it according to them id have to stand by my timer all day and shut it off early....which would be stupid.

it does say to run it at 1cfh for 3 minutes, so if i ran it at .3cfh for 15 minutes would it have the same effect?

also my kit instructions say to run it for 3 hours after the lights come on so this doesnt really make any sense at all