That algae scrubber screen didn't look near rough enough. Did you scratch it really good with a hole saw? A screen that size should take about 45 minutes to an hour to adequately rough up.
The screen should go into the water about 1/2". It also looks like you have way too much flow down the screen. Try dialing your pump back a bit until your screen starts to get seeded. Once algae starts growing, all those microbubbles will go away, trust me! Then you can turn your pump up just a little more. It happened with my tank.
Looks like you need to put a sponge block between your baffles.