Proof or experience?Don’t use sledgehammer, there’s a good chance it will screw-up your plants permanently.
Good luck with your new light man.Gonna have 2 plants with roots organic soil, fox farm tiger bloom, big bloom, grow big, open sesame, beastie bloomz, cha ching, bush doctor, kanga roots, and sledge hammer. Last run got me 47g's off one plant and 29 off the one I topped(I really messed this one up, but brought it back mostly), so hoping to do even better.