Are you sure its not BBA. Hair algae is easily removed.I change 20% of water every couple of weeks. Can't up the Excel as I have shrimp. Can't manually remove as its completely attached to plants. Can only remove leaves. Very low bioload just tetras and corys. Lightly fed twice a day.
I have no idea if nutrients are limited. It's a dirted aquarium. I'm trying the KNO3 protocol. We'll see if it works. I'm on day 4. No change yet. Getting very frustrated.
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