Okat first that is not FIMming. That's just pruning.

You should NEVER FIM or top or pinch in flower under any circumstances~ it confuses and stressed that plant and WILL severely hurt your yield. There's no 'might' about it.

However, pruning the weakest low branches is fine. Only remove thin, spindly, weak low growth. This actually improves the % of your yield that is prime dense tops. The yield will be the same, but it will be much nicer, and you are also less likely to have mold problems with the improved air flow from taking out scruffy crap below the canopy.

For an extreme example of this, Google 'pistilwhipt method'.

EDIT: Josht please don't try to give advice on subjects you are not familiar with, thanks. It ends up being really confusing, and someone who actually TAKES that advice could lose their crop... NOT cool.
stinkyattic Reviewed by stinkyattic on . Should i FIM in early flowering? Outdoor organic soil grow. About 4 mo. old. My question is should i top/FIM my ladies if they are in the early stages of flowering? I was also thinking of taking off about a thinrd of the lower branches, resulting in focused energy on the tops. will this help me increase my overall yeild or will it stress the plants out too much? newbie in norcal-:jointsmile: Rating: 5