Ok, I have installed my carbon filter along with its dedicated inline duct fan, not only my temps are down there is not even that early plant smell.
I could put two more cfl s and now 680watts of cfl and 144 watts of fluoro in there.
I am now running on 14/10
Plants are varying in size, the shortest is around 32cms (12.6inch)
The tallest is around 54cms (21.3inch)
There is still three more days until I switch to 12/12, I hope they will fit in this growbox hehe
Here is the photo of the filter and fan
Here are the babies