Algae/Fungus Identity

[jonathan11]

I have a tank that has a white, filmy, algae or fungus on the plants, wood, and heavily in the java moss. Not on the substrate. Never seen this before. Can anyone identify this? As well, sunlight briefly hit it (tank) in the afternoon. Thx in advance.

Walter

 

[Philosophos]

Pictures would be a big help. There's fungus, chemical precipitation and dead algae that comes to mind right off the start for me. Does it look fluffy, or like fine snow? What kind of driftwood? Are you playing with anything that contains a lot of CaCO3?

-Philosophos