Him and another dg are the newest in my 40b, other fish are about 20 black neon tetras, have had them for about a week. I moved him to a 10 gallon yesterday when I noticed it and treated him with api melafix. Wound looks almost fuzzy this morning, thinking maybe I should have got fungal instead. Having a hard time getting a good picture.
pH 6.4
Nitrates. 15
Hardness. 150-300
Nitrite. 0
Ammonia. 0
KH/Buffer. 0-40
Water Temperature 78