Fish Disease Diagnosis
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I have fish with ulcers and body sores and I have been told to put some TetraCycline in the pond with the fish. How much should I use and how?

NEVER use Tetracycline (or any other antibiotic) in the pond WATER. Such medications may be effective if FED to the fish in a medicated food, but not in the water.

Secondly, ask the shop owner who gave you that advice to show you his copy of the book which recommends this treatment method. Try to buy it, because the book is surely an antique with collector's value.

Please don't put antibiotics in the pond water.

The reason is this, purification of water is dependent upon the activity of beneficial nitrogen reducing bacteria that reduce ammonias and nitrite chemicals into relatively harmless nitrates. When you added these antibiotics to the main system, you killed alot (or all of) the bacteria that purify the water. Obviously your intentions were good, but this massive die off of filter bacteria creates a problem more severe than a routine bacterial infection of the fish, namely, high ammonias and nitrites will result from the use of these drugs in the main system. Now you have to do major waterchanges to correct the ammonia problems, and the fish suffer for it. Futuristically, you can use drugs like these in a bath. OUTSIDE THE MAIN SYSTEM.



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.

Wife Beater

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