I have 4 fish in 50gal SW FO
tank. My first fish was a clownfish. When I purchased him, I noticed the upper portion of his body, near the top fin, had a bit of discoloration, darker.
I since have added a few more fish including another clownfish. Now, the dark discoloration in my first clownfish has spread like a fine black powder over his body. Not only that, it has spread, a bit, to the second clownfish and my lemon butterflyfish. All the fish are healthy otherwise, eating, swimming, and breathing. No signs of ICH which makes me believe this is a fungal infection. BTW
, all my levels are good in the tank, although my PH
is at 8, but not sure if that is an American Pharmaceutical test kit problem or I am a bit low. I need to replace my test kit to a more reliable one.
Anyways, does anyone have any suggestions? I don't really want to add a medicine that will kill my biological filtration, if possible. I have read that some are using medicines in the food. Is this possible?
Please help me,