No amino dosing, right? That stuff was dino-fuel in my system.It's a brand new 50W Pentair HO on 130g tank and ~200g total water volume. Plumbed DT to DT. Tried for a couple weeks at 250gph, then tried at 450gph for a couple weeks. It might be slowing them down, I'm not sure. But again, if a significant portion of the Ostreo doesn't go into the water column, it seems like it's not going to work. My Ostreo is definitely enjoying the comfort of the mucus mats at night.
Edit: I have done a 1 day blackout initially, which improved things drastically. Then they returned a week later. So I did a 3 day blackout with the UV running, and it again improved things. But they always eventually returned. My nutrients are where they "should be" the whole time (using a doser for No3 and Po4).