"Fungal/parasitic black spots is not as common but not unheard of, esp from carps, minnows and other cold water fish that were housed or raised in ponds and/or with a large snail population."
You have lots of snails in that tank? Or maybe you could do a parasite treatment just to be safe...
Everything else I'm reading about mentions ammonia poisoning, but that isn't the case since you already tested the water.
You have lots of snails in that tank? Or maybe you could do a parasite treatment just to be safe...
Everything else I'm reading about mentions ammonia poisoning, but that isn't the case since you already tested the water.
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