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274 Posts
Yeah. Looks like green spot algae. What surprises me (and this could be bad) is that it looks like it's growing on leaves of a stem plant. If that's the case, I would be very weary about that. IMO. I sometimes get spot algae on my anubias leaves, but they go away. Is there good water flow in your tank? How about filtration? Doing any water changes? What size tank is this in?
