- Joined
- Aug 25, 2018
- Messages
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- What state or country do you live in
- Iowa
It is is really fine green stuff. The brown formed in little dots and it was hard to get off. This green stuff comes off fairly easy. I don't see any more brown.If it was the brownish stuff , likely diatoms.
Pic below of a spot I cannot get to. Looks like that. However, there are some brown dots mixed in from when it was growing.


