Hindu Kush. My 2nd grow, 1st from seed.

I topped them again 6 days after the 1st topping. As you can see they are loving it in there. They are at 9 inches now so will set up the 1st of 2 trellis supports. I am unsure what to expect when they stretch, was thinking 50% max but read they can go 100%, anyone grown Sensi Hindu Kush before? I will feed them again tomorrow, lollipop them and give them a good clean up. Pheno 3's runoff is consistently running at about 140ppm less then her sisters, not that she appears bigger or anything. Cheers!