Fan leaves--to prune or not to prune?

[lgmlgm76]

So I tried doing a search here first and couldn't find anything. I know a few indoor growers who prune much of their top fan leaves during mid-flowering, saying it helps the colas to fill out. Is this a general indoor practice? I normally only prune yellowing fan leaves or ones that are shading neighboring plants' flower sites. If they're healthy and not shading anything, why cut them? Any tips would be appreciated.

 

[shawnskush]

I prune fan leaves just enough to allow all lower buds to get light and ripen properly around 10 days from harvest any sooner is detrimental IME.