This crap caused a teardown and start over for me. Goodluck. Keep us informed of what you do to best it, please.
I have 2 Jaebo powerheads in my tank that the same stuff grows on. It doesn't grow anywhere else, so I've been leaving it.
I don't know what it's name is, though. Did Bill have an answer?
Well I am not 100% sure the first growth was on the pumps. Whether it was or wasn't, if the pumps were leaching anything that goes into the water -- algae can start growing anywhere from that.
And, my pumps are Tunze (and one Cobalt/MJ original), so I think that is highly unlikely to be a source of anything.
I remove and acid wash regularly.