I would always recommend if mixing recharge, any mycos or supplements similar to recharge, after mixing smoke a bowl or two then give it a stir and then feed it, that's me, several companies recommend it.
I tested nutrients for Green life biotics for about 5 yrs and I was lucky to some private 21-27% sulfur/calcium mix and play in peat and Coco and in the peat it knocked it out of the park.
That said you can find some 17-21% available on the open market that is good also.
Yes with products like the sulfur I would mix in soil prior to planting, sulfur will help the long chain molasses or sugars break down really fast.