Hey, i watch your vid, thats a nice setup you got goin.
i noticed you had left a few dead dried up leaves on top of the soil in one 'scene'. Remove them, as that will attract more pest.
Liking the ladybugs, but if they aren't stopping more damage from occurring i don't think they are eating the culprit. Like the poster above, neem oil as a root drench or sprayed on leaves, to make sure the bug eats the stuff.
Im replying really as your damage is/was similar to some i had this summer. Took me weeks to find what it was. And it was only coming out at night, it was one or two mini moth type things. Never got a postive i.d. But the damage was large, larger than any thrip could do, so thats why i was stumped.
got rid of it with neem dose and then a pyrethrum 5e.c. Spray that i 'fog' the room with, if you get what i mean. Unlike neem its a contact one, and it would kill all your lady bugs.
If you dont mind something stronger try abamectin, or a product that contains it. Dont use it in flower, but it isnt truely systemic, but trans-milliar. ( i would have to look it up again to be sure.) but yeah use that when in veg and at latest start of flower, as it takes alittle over a month to dissipate. But when a big munchs on the plant this stuff kills them off. I have found it to be more effective than neem, but it isnt organic,
sorry starting to rant now... Take it easy and good luck wit the bug..