FF Cha Ching?

Hey guys, I’m wondering if towards the end of my grow using down to earth dry amendments and build a solid flower top dress kit if I can hit my girls with some cha Ching (9-50-10) from fox farm in order to add a finishing touch? I know they say or will kill the beneficial bacteria and what not but since the last two weeks are part of the fading process and they stop taking up nutrients at that point wouldn’t it be okay? Thanks guys!

Big doses of water soluble phosphorus turn the leaves of my soil plants yellow overnight. A bunch of phosphorus too late in flower can also cause foxtailing. Or your buds can just push out a bunch of new white hairs and it seems like they'll never finish.

I think I would look for something higher in Potassium for the end of flowering.