Originally Posted by
Al Mc
http:///forum/post/2861812
Actually, I am not a big believer in fresh water dips. When I first started in the hobby and had my experience (don't we all) with Ich I tried it and did not see any improvement in survival rate. Personally, I do not think it helped the fish that much..just made me feel better that I was trying something.
Al just what i have culled over the years
Freshwater dips are a highly effective form of treatment against a wide variety of parasites, although their use against Cryptocaryon irritants has been questioned (Colorni, 1985). They have been proven effective against Amyloodinium, Turbellarian Worms (the so-called Black Ich), some Flukes (Noga, 2000), and Uronema (Kollman, 2003).
To prepare a proper freshwater dip, take either dechlorinated tap water or demineralized water (RO or DI), aerate for an hour to maximize dissolved oxygen, heat to match the temperature of the dip water to that of the tank water, and then add buffering compounds to match the freshwater pH to your saltwater pH. The aeration should continue throughout the dip. It is crucial to match temperature and pH and to maximize dissolved oxygen. Most people that experience problems with freshwater dipping have made an error in these critical parameters.
The recommended duration of the dip varies from author to author because different species of marine fish tolerate freshwater to different degrees. Generally speaking, any dip less than two minutes is useless. Many fish will easily tolerate five, ten, even fifteen minutes or more. The least tolerant fish are wrasses, lionfish, pufferfish, drumfish, hi-hats, jackknives, firefish and many of the scaleless fish as a rule (Calfo, pers. comm.).
The best advice I can give you is to observe your fish closely. Some fish will swim around like nothing is happening. Others will go straight to the bottom and lie there. Definitive signs of trouble are manifested by the fish jumping out of the dip bucket and spitting water.
There are several fish that give off toxins with their protective slime coat. Mandarins, boxfish, and the Six-line Grouper are a few. When in freshwater, they will naturally excrete more protective slime. There is a possibility that in the confines of a dip bucket, these fish could poison themselves or others, so be careful.