Quote Originally Posted by Nugget Lover
Tranoble never have Co2 levels above 1400 PPM, that's the highest you can go without hurting your plants, any higher is toxic.

http://i91.photobucket.com/albums/k3.../Co2Levels.jpg
I hit 1800ppm at the peak of flowering. This is the PPM of nutrients I use at the time and I match the CO2. There is no burning...and trust me...the plants love it. This is week 6 of flowering approx. Some strains cannot take quite so much, but if 1800 is to much I do 1600. Ive never done below 1600ppm during the height of flowering. 1400ppm is low IMO.

Tran uses a 3/2/1 nute schedule which is VERY aggressive in regards to PPM and you need to have a strain that you know can handle it. That being said, Advanced 3/2/1 usually requires 1400ppm barely 2-3 weeks into flowering. Error on the light side of things then slowly increase.