I had two females, one sour diesel x trainwreck and we think the other one was chocolate chunk, but in the 12 12 light sessions, I noticed pollen sack starting to build on my sdxtw plant. Scared the hell out of me BUT truth to be told, i pulled the sacks off in a somewhat fresh stage when their tiny, and couple more grew back in a couple days, still in the same are, but not as many and also pulled them off. They never grew back.... and had a EXCELLENT harvest with pic proof of no seeds

I don't know if it was the fact that I caught them in an early stage or just got lucky.