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Gotcha, well my basement reads 500ppm. I couldn't think of any other reason for it to be that high.

I have a carbon monoxide detector.

Im talking about from the open flame burning off natural gas? not the exhaust.

Co2 ppm levels are reading at 500 ppms. Im not supply that, im pretty sure that the rise in co2 in the basement is caused from my furnace running.

Right now lights are off and the thermostat is reading 73 degrees with 28% humidity. The high says 82 with 50% humidity (from the last time the lights were on)

Btw thanks for all the info and input guys.

Thanks, you might be right. It could be the feed or a combination of things but I seemed to notice changes as soon as I started using co2. I follow the General Hydroponics guide (Flora Series) for DTW. I have recently calibrated my ph meter, I use a blue lab combo meter. . . . .What could be the...

I do have a co2 meter. It controls and reads my co2 levels. I have it set at 1100 ppm but it actually reads 1100-1200. . . . Im not exhausting any air out of the room but I do have an a/c blowing.

I'll have to double check that tomorrow. I have a infared gun but I'll also move my thermostat so that I can get an accurate reading.

My humidity has been at 50% both my thermostat and dehumid read the same. Whatever I set my dehumid at is what it'll reach. Why wouldn't I lower the RH in the room if the leaves seem to have trouble transpiring? Im confused lol

Oh ok, thanks. I set my dehumidifier to 35% it should stay there even at night. I have one of those dehumidifiers with a pump so I never have to empty the bucket. . . . .No that isn't the room, I wish I still had that room running. I had to move into a new place so now im using a 10x10 tent with...

This is mind blowing lol. Thanks for your help. . . . What are your temps and humidity set at while using co2?

I did introduce co2 late into bloom, midway through actually. I started using co2 5 weeks into flowering and I started it at 1100 ppm. My dehumidifier kept my room at 50% day and night. . . . . One thing i forgot to mention was that I had some leaves that were really yellow and very soft, I also...

I did a quick read. let me see if I understand what I read. Pretty much, if the vapor pressure in the room/tent is too high it will make it harder for the plant to transpire? Therefore vapor pressure has to be taken into consideration when trying to achieve a optimum humidity level?

Do you have a site you can direct me to?

No, Ive never researched vapor pressure. I'll do that now. I have 1 fan 16in air king i've been meaning to throw another in there.

Here is one plant.

now that my pics seem to be showing up im about to take a few more.

for some reason my pictures aren't uploading and my links aren't working either.

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