Hamerhed
New member
I have 2 clarkii juveniles in a 20 gal tank. they've been in there for a little more than a month. At the same time i put them in a also but 6 snails and a green hairy mushroom. The tank had just finished cycling. The smaller of the 2 clowns who i'm sure was clean when he went in soon developed black marks on the tail fin and the one just behind his dorsal fin (lombar fin?). he's getting harrassed by the other bigger clarkii but nothing dramatic. My water is good 0 ammonia 0 nitrite 0.3 nitrate 0 phosphate 8.1 ph 1.023 salinity 79deg F. Could he get marks like that from rubbing on the mushroom? Heres a photo http://reefcentral.com/gallery/data/519/212238P9130022-2.jpg
