I noticed about 2 weeks ago that both of my 6" albino Oscars were forming red marks on their heads, I thought from striking the tank lid from the occasional jump at feeding time. A week later the marks turned to what looked like scales missing right on top of the head. Then I noticed they stopped feeding even after a water change with great water parameters. So Having had good luck with pond tablets and UV I first took my UV sterilizer off its 12 hour timer and turned it up to 24 hours continuous running. Then I dropped in just 1 (good for 50 Gal) Pond Fizz-Tab Parasite Treatment which among other things kills Flagellates Hexamita and spironucleus which are associated with hole-in-the-head disease. Just like the directions said the redness and holes were almost gone in 72 hours and my Oscars are back begging for food. This is the 3rd time in 2 years I have used these large pond Fizz-tabs in both parasite and fungus treatment and not only are they a bargain at $12-$15 per 1000 gallons of treatment but they work better then any small package treatment I have used in QT tanks without all the QT fuss. It also never hurt my plants. Sick fish seem to know its treatment and mouth the big fizzing tablets and stay close where it is dissolving. Because the whole tank is treated secondary infections are rare. I think my Oscars were infected by my python hose shared with my Koi tanks are carriers of some of these pathogens but are immune showing no symptoms. No more sharing hoses between tanks on water change day unless very hot tap water is run through first.
http://www.junglepond.com/details.asp?item=PT504
http://www.junglepond.com/details.asp?item=PT504
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