Around a year ago, I had an initial problem with my pH readings, and it just ruined my oranda's fins. The pH dropped to below 6, and their fins deteriorated so badly. It took a month to two months to get them back to looking decent.
the same thing happened two weekends ago, and for the past three weekends before that. I thought someone was messing with my tank. I would come back to my aquarium with the orandas having bloody looking fins, red streaks, and you could see holes the size of small marbles in their fins.
I fixed the problem this week by getting the pH back in order, and maintaining it. for the last week and a half. I added melafix each day in the proposed dosage on the bottkle, and I cannot tell that the fish were even sick. the fins have COMPLETELY grown back....even where there were holes in them.
have this stuff on hand.
Woot for Melafix!