Thx for trying to help,
I'm not sure if this is diatoms but it could be, it dont look like anything I've seen before. It looks like fungus except brown, it's fluffy.
I forgot to mention I have 3 pearl danios and I only feed them once a day.
I have seen some possative activity since posting. The moss closer to the light on the wood had been turning yellow then white. It clearly looked like it was dieing. That is where most of the brown gunk is.
Today was the first day I added iron. The bleached out looking moss has its center stems turning green again.
The algae is driving me nutz though.