so what do these coccolithopores look like in your tanks?
I have unusual white floating sand particles that only seem to show up when I do a water change. They're not precipitating calcium because that tends to be "fluffy". It's not sand since that sinks at these sizes. It looks like little foam pellets (1-2mm).
I don't know what these things are, but I'll try to take a microscope picture.
I don't have dinos any more, but I do have other unusual characters. The latest is a brown sponge fuzzy growth that doesn't spread by water, but looks to be encrusting.
and an infestation of parasitic featherdusters that encroach and damage my LPS
