Fish Disease Diagnosis
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Potassium Permanganate Dosing

Is there a criteria to determine whether I should perform Day 4, or even Days 8 and 12

....if the color does not change for at least 8 hours for Day 1, should I go on to day 4 at all?

...If the color does not change after 8 hours for any day; shouldn't I add the hydrogen peroxide to stop the process and then turn on the filtration system ?

Yes you should do day four and eight because even though "Treatment One" lasted plenty long enough, it didn't kill Fluke eggs or embryos. These have to be interecepted on those subsequent days.

After a potassium permanganate treatment of six to eight hours on Day One - if it hasn't converted from purple to amber, you can inactivate with peroxide, and probably should.

Fish disease problems? Need some help? The help pages take you through the basics of the 'fish health work-up' diagnosis method and basic fish disease treatment methods.

90% of all health problems and fish deaths are caused by poor fish keeping! The key pages are essential reading for all beginners and intermediates who are serious about disease prevention.

Expanded Content by Dr. Erik Johnson, and Used with Permission; Frank Prince-Iles ©2009 All Rights Reserved