Here is everything you need to know on a Sealed Room!!!!

http://boards.cannabis.com/advanced-...e-revised.html

W/O CO2 if you are in hydro PH will be an issue and during flower the Photosynthesis process will not be correct... With sealed it is a must CO2 that is. Read that thread and you will have all info Necessary...
GreenLeaf420 Reviewed by GreenLeaf420 on . A question for stinky and all the other guru's what would happen if i set up 4k watts sealed flower room and didnt add Co2 untill i recouped some money?Would be prob before first harvest. Rating: 5