I was going to say something last night but I didn't want you to take it wrong. So don't take offense. But have you checked everything out with your environment? I know you know what you're doing. I'm just noticing a pattern, might be enviromental. Just trying to help you figure it out.
My environment isn't perfect but I've grown several crops and had no problems -- using the same equipment.
But I may have just gotten lucky and picked strains that were more resistant to sprouting nuts.
The biggest issue is probably light leaks, but again, it hasn't really been an issue until now.
Yesterday our power went out and it fucked up one of my smart plugs causing it to go on 2 hours early.
Guess I'll be checking for nuts again next week.
Hell I should just make it part of my process until they finish. It's not like a have a lot of plants going this round. (5 little ones and 2 medium)
I grew a plant called Purification under identical conditions and it turned out fabulous. Since then, I've had 2 bad experiences with cult classics gear and may be done after this. Only one 'Mothers Little Helper' had zero male flowers -- and one was a true hermie that got culled.
I'll figure it out. It's not the end of the world.
Hermies are still better than mites...