I've had it twice and cured it with levamisole . But only treated 50 gallon tank is about 2.5 grams let it stay in the tank for 3 days and 2 nights then remove as much water as possible vacume as much as possible as offten as possible 3 weeks later treat again same way then vacume again and done . It's worked for me twice . And a couple of firends of mine .
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