bud29
Aquarium Advice Addict
The stuff on the DW sounds like it's a type of harmless fungus and it will (eventually ) go away. It may take a while, and it probably will get worse before it gets better, but it will go away. I got that stuff on my mopani wood. It did get to be looking pretty horrible, but it cleared up eventually.
Oh, and I found that if you scrub it off, it'll come right back
Oh, and I found that if you scrub it off, it'll come right back