cambspaul
Fish Fanatic
I have just noticed a mark on my common plecs back end near the fin , does anyone have any ideas . I have just had problems with medicating the tank for finrot where all the fish went to the top of the tank and were drowsy for a couple of days . Proper dose was used and airstone in tank aswell . I did a large water change and added carbon to get the meds out after advice i got on here . The fish have gone back to normal now . So i dont know if this mark is to do with what happened . The med used was interpets finrot med . The plec was the one with finrot in the first place and now this . Ammonia is 0,nitrite is 0 , nitrate is 20 . All other fish seem to be fine

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