co2 what temp/humidity is best? - Page 2

cloudflyer · #11 08-31-2008, 11:32 PM

Quote:

Originally Posted by saturnlily

do i do it with the lights on or off?

Co2 should only be used when the lights are on.

TexasWild · #12 10-11-2008, 01:08 AM

Quote:

Originally Posted by kalisurfer2867

yes that is correct, bring it down about 7 degrees...also unless you have a small space or a huge emitter your probably better off just pumping fresh air into your garden. The outside air has higher percentages of co2 than you can affordable pump in

MY room is about 85 during the day and 65 at night my humidity usually around 50 to 70%. I am working on lowering the temp with exaust fan and carbon scrubber (for smell as I am fixing to start flowering) but how do I get rid of excess humidity. I understand that I need to be close to around 40 to 50% when flowering to avoid bud rot, correct?

FullMetalJacket · #13 10-11-2008, 08:06 PM

Dude those temps are fine if not ideal; humidity would be nice to get be below 40 once you are flowering. I actually prefer temps 85-90 w co2 for faster growth until last 2 weeks from harvert i drop it back to 78 and humidity as low as i can go; usaully like 15-20...At the end of the day its a weed and your current conditions should be staright.

If your ambient room humidity is high lowering it will be hard. Depends on if your set-up to choose the best method to lower it.

FullMetalJacket · #14 10-11-2008, 08:10 PM

Quote:

Originally Posted by kalisurfer2867

probably better off just pumping fresh air into your garden. The outside air has higher percentages of co2 than you can affordable pump in

I dont understand....

cloudflyer · #15 10-11-2008, 08:20 PM

Quote:

Originally Posted by kalisurfer2867

yes that is correct, bring it down about 7 degrees...also unless you have a small space or a huge emitter your probably better off just pumping fresh air into your garden. The outside air has higher percentages of co2 than you can affordable pump in

Me either. Outside air has 300ppm whereas I keep mine at 1500 PPM 3x as much. The bottle I use and regulator were $300 and $24 to refill every 2 months. I yeild 20-40% more that more than makes up for the origional $300. The main thing is if you are growing under CFL's there is no point to co2. Also your need to have ample nutes and a root zone temp at 65 to really take advantage of CO2

dazed76 · #16 10-11-2008, 10:33 PM

1800ppm 85 to 90 35 to 50 humidity