WHOA - camera underwater! Not expected!!! LOL
Yeah I think your bubbles are great, lots more than I had. To me it looks like your screen has more green on it than mine had at that point (not counting the first week). That could be due to the higher amount of bubbles. I would just leave it be, whatever you're doing is working.
From my experience, I the screen was not growing anything right in front of the blue so I backed it off and put the diffuser over the blue until it filled in with green in the holes. I now run it 12/12 with the lights as close as I can get them and zero burning. I think initially I was dealing with photoinhibition of GHA so backing off and such was probably the right move. Also after it turned thick and green I was running 18/6 and got a dino coating by the 3rd or 4th day, then Garf told me he thought it was overillumination, and when I knocked it back they didn't really start to form until day 5 or 6 and wasn't nearly as much on day 7 compared to day 4 on 18/6.
The diffuser is just a section cut from a 2' x 4' sheet of diffusion grating. You can find these in most big box hardware stores that sell the recessed "troffer" light fixtures (that go up into a ceiling grid system). They will be in the same area as the white and reflective egg crate, and the 2' x 4' acoustic ceiling tiles. Anywhere that carries those items will have it. It's called a "prismatic diffuser".
I have not re-roughed my screen, I just left it alone. Initially I thought I might not have roughed it up enough after reading SM's UAS post, but decided just to leave it be.
As far as the dinos go, in the tank I run the waterfall scrubber on I also have several different areas where I use the plastic canvas to prevent salt creep from microbubbles popping, strainers, bubble blockers for effluent from the scrubber, etc. All of these grow copious amounts of dinos. My conclusion is that any kind of soft plastic (white egg crate included) will grow dinos if it is exposed to the water (i.e. not encrusted with coralline or covered in a thick mat of algae). So until your screen gets some thick green growth, you're going to grow lots of dinos, but it will pass.