Cool video, grouch. Looks like a great setup.
I see that you went with rockwool cubes for cloning. I've used them in the past, with fairly good success. I think the trick with using them is to not oversoak them...they have the potential to hold too much water, which can rot the stems before rooting takes place. Also, try not to squeeze them to "wring" out excess water, since the structure of the material can change when they're squeezed. You need air to be able to get into the (moist) cube in order for roots to form and grow, and squeezing them can cause the "pores" within the structure to get closed down. This why I switched to rapid rooter plugs...they're more spongy and resilient, so even if you squeeze them they tend to pop back to their original form (allowing air to get in very easily). In contrast, if you squeeze rockwool cubes too firmly, you'll see that they tend to remain "compressed" rather than reverting to their original form.
I don't mean to imply that rockwool cubes won't work...they certainly will, and lots of folks use them successfully. Odds are you'll get some (maybe all) of your cuttings to root. I'm just sayin that, in my experience, the rapid rooters are easier to use and I've had 100% success rate so far using 'em. I've tried significantly more times with rockwool over the years, but my success rate has probably been in the 80-90% range.