These girls are 19 1/2" tall and that includes the 10" pot..
Heat and humidity are issue when one grows in a smurf tent 39" totoal (floor to bottom of the joist). This setup requires a larger exhaust fan, maybe 6" @ 440 cfm would suffice but the 203 cfm is not enough. This air exchange would be more then enough, if there was some height; I say this because there were no issue with the same fan in a 4 x 5 x 6.5 ft tent, but that ship sailed when we moved.