Need Help! What is optimal Co2 levels for my Sqft

norcali

Well-Known Member

• Sep 20, 2010

• #1

hello i have a 9x9xh8 closet with 3 600w hps, air cooled by 6inch vortex, exhaust is 10inch vortex(turned off during co2 time), lumatek digital ballast. sentinel cppm4 co2 controller, and 20 lbs co2 tank. my question is what should i have my co2 setpoint at according to my sqft of 9x9xh8 grow space. does any one know??? plus rep if you can help!

 

A

a2612596

Member

• Oct 1, 2010

• #2

Here's a co 2 calculator, hope this works for you. Good luck.
http://www.hydroponics.net/learn/co2_calculator.asp

 

T

T.H.Cammo

Well-Known Member

• Oct 2, 2010

• #3

If you have the controler, sq. ft. doesn't make any difference! Set the controler for 1,500 to 1,800 ppm for maximum co2 benefit. I tend to be a little conservative, so I say 1,500 ppm!

 

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a2612596

Member

• Oct 2, 2010

• #4

That all depends on the regulator, however 1500 ppm's is what you're looking for. Just remember the exaust fans must be off or compensated for.

 

legallyflying

Well-Known Member

• Oct 2, 2010

• #5

1500 for sure. Also keep your temps around 85 to maximize respiration and utilization of co2.