Well haven’t got a clue what this was but the only thing I can think of was to do with the substrate I added. Put in a few different meds 1 at the time and kept the water as clean as possible.
Well it seems to have gone and healed up
The pitting got deeper and spread over a week or two then started to heal.


Well it seems to have gone and healed up
The pitting got deeper and spread over a week or two then started to heal.

