His is fine for now, it might not be parasites. Some fish are really picky so for all we know he needs to adjust him on the new food. Don't raise your tank temp for now.
Parameters look fine. You most likely got a picky flowerhorn.My water readings are:
Ph: 7.6
Ammonia: 0ppm
Nitrite: 0ppm
Nitrate: >5ppm
Temp: 28.4 degrees
What else can I check?
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