Dyno or diatoms?

[Gage Sullivan]

It’s mostly on corals and sand. It’s not very green (I don’t think it’s GHA) and hydrogen peroxide doesn’t affect it. What is it? Is it diatoms on rock and dyno on corals? I haven’t noticed the small bubbles associated with dyno.

 

[Alexreefer]

I think it is diatoms. Have it in my tank too growing on sand and glass

 

[DaveNJ]

diatom

 

[Gage Sullivan]

Even the fuzzy stuff? Only found one vid on fuzzy diatoms and would love more input.