I was one of the bleachers. I hit something like 3ml 3x a day on a 90gal. To see if it worked against dinos.
A few memories from that experiment on my end. The tank smelled great. The skimmer worked harder than I've ever seen, and the dinos didn't like it... they receded some... but no long term effect. I also questioned if it could work on velvet. Which iirc is related to dinos.
I had a sailfin yellow, blue hippo tank. Clowns. Across, some LPS and zoas and BTA. I suffered no losses in live stock. My LFS can confirm.
I saw no real benefit of doing it, but it was worth the effort. Twillard nuked his tank I think