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Pet Product News Editorial Blog:

Monday, March 15, 2010

QuickCure and Antibiotics

By David Lass


Medicating fish is an important and often controversial topic in the hobby and industry. It is my opinion that it is the job of fish wholesalers to do as much medication as is required while they have the fish, so that when the fish go into the retail store they should not require any medication. Oh, if wishing made it so. The reality of handling fish is that at every level there is always the chance that fish will break down with some disease or parasite.

Every time I receive fish into a new tank, or move them from one tank to another, I always treat with a dose of QuickCure. QuickCure is formalin and malachite green, and it is the best (for me the only) prophylactic treatment that should be done for any fish at the retail level. Used at the standard dose, it will not discolor the water but it will provide some protection against ick and fungus, the two most common maladies for tropical fish.

When it comes to using antibiotics on fish, I do not think this is something that should be done-- either at the retail store level or, most especially, by hobbyists. Unless you have a microscope and know how to use it, it is impossible to diagnose what bacteria are causing the problem on the fish (assuming it is bacteria and not just lousy water conditions, which can be remedied by a couple of partial water changes).

Since you don’t know what the bacteria are, usually stores/hobbyists resort to using a wide spectrum antibiotic, which knocks out both gram-negative and gram-positive bacteria. The problem is that it also knocks out the good bacteria of the Nitrogen Cycle and the tank has to start from day one in terms of rebuilding the cycle. In the U.K., hobbyists cannot get antibiotics except from a vet, and here in the U.S. one of the big-box chains has stopped selling (most) antibiotics. There are just two things a hobbyist can successfully treat: ick and fungus. Thinking there is a bacterial infection that requires antibiotics is very dangerous and treating with them does much more harm than good.

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Reader Comments
"There are just two things a hobbyist can successfully treat: ick and fungus. "

What a complete line of crapola that is. So I guess hobbiest should not treat for gill flukes, hex, anchor worms, tapeworms, etc.

Get overyourself and find a new job please.....
Rick, Grand Rapids, MI
Posted: 5/5/2010 10:11:27 PM
Well said.
Patrick, Clifton, NJ
Posted: 3/30/2010 8:48:31 AM
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