I can't figure out what this is - there is only one spot. She is acting normal. Tank is fairly well established, but has persistant low-level ammonia that I can't seem to get rid of even with daily water changes, am thinking of adding another filter (26 gallon tank, Aqueon 30 filter currently). No new fish except for last 10 babies......
Any ideas what the spot could be?
Thanks!
Lisa
Any ideas what the spot could be?
Thanks!
Lisa