How much can i trim/prune? off during the flowering period?

[RossAlexander]

^ can i trim like everything off except the flowers like all the fan leaves and stuff?

[Darth BongWongDong]

No! Fan leaves are what help bring up the nutes and water.....i wouldnt prune anything unless its at the beginning. To branch it off cut off the new set of leaves and in two weeks you will have two branches and so on. will end up with a short bushy plant.......

[Hick]

Don't trim healthy leaves. Why?..
Photosynthesis (http://users.adelphia.net/~lubehawk/BioHELP!/photosyn.htm)

[Biffdoggie]

I prune some smaller bud sites in the very beginning of flower to concentrate some efforts on the larger buds, thats it.