Brought a sample from my tank to work because I thought we had a pretty trick microscope - But this is the highest zoom it will do
They are mostly on the sandbed, I do also get some on the rocks but it mainly grows on any remaining turf algae on the rocks, which is not all that much. Where coralline grows, this stuff doesn't. About 80% of it goes away after lights out. It also doesn't really get snotty with the bubbles like some real bad cases you see, it's more like dust.
I have 70g of water volume and am *this* close to buying either a 24w Green Killing Machine or a 55w Jebao (prefer the former unless it isn't big enough?) but I was hoping to verify it it would help or not before purchasing. I guess it cannot hurt at this point.
Well, I bought a 24w UV (70 gallons total volume) and after 24 hours, not much change. It's not worse but I also don't think it's a ton better. Maybe a little bit. I basted my entire tank tonight to kick up as much as I can and will see how it goes in the coming days I guess. Pump on the UV is really quite slow flow, so it may take some time. If this doesn't work I'm not sure what to do next, may just remove sand altogether, but I'd prefer not to.