The video doesn't work for me and the resolution of the pic isn't good enough to see any details. When I fought AEFW a few years ago, my valida was the first acro to get infested. Have you tried blowing the acro with a turkey baster or power head? If infected, you'll see FW fly off into the water column.
It took about 6 months for the AEFW to be noticeable in my tank after buying an infected frag, so if you think you have them, I'd act fast before they multiply too much. It's so easy for eggs to get into our system on frag plugs.
Good luck. I hope you don't have them.