I've underestimated the stretch again. It's been a week from flipping and the clones have doubled in height. This strain is supposed to be indica dominant, but it looks like it could potentially triple in height during the stretch. I'm going to flower the next batch of clones sooner.
I supercropped and put a scrog net in to train the lower growth that will start shooting skyward. I still have 18 inches between the aircooled 1000w hps and the top of the canopy. I might have to get pretty creative to keep a safe distance going forward. We'll see how much more they stretch these next couple of weeks.