Quote Originally Posted by Zandor
just a note: CO² will not work with fluorescents lights. There is not enough lumens for the plant to process the extra CO² you must use HID lights if you use CO².
That was from this thread about BobBong's two successful CFL grows http://boards.cannabis.com/showthread.php?t=61768

You would probably fine if you have a decent ventilation system without adding any CO2.