Would a lockout cause these symptoms?
Looks kinda like some kinda of rot?
How humid is it in there?
Its not happening in veg, right?
It is humid, but the worst ones are right next to fan. It was starting while still in veg. That picture was from when it was still in veg. Same thing is happening to many flowering tops.
Is there anything that can be done to rapidly raise the PH of coir??