05-14-2007, 11:04 AM
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I used salt only, successfully on my Otos. I think they are a dwarf catfish species, and a sensitive one are they not? Correspondingly, I have good reason to think CopperSafe meds killed one.
I've read many many cases of using salt with bottom feeders and softscaled fish, but almost all of them indicate pre-dissolving it. (And you can absolutely see the salt in the water, when you pour it in the tank so it's obviously still there in the water, not to mention, the only way to remove salt from a tank, is water changes. Clearly it continues to be there after dissolving.)
Almost all of them indicate adding it to the tank slowly. Basically over the period of a day or more. Usually adding predissolved to the tank, either by a drip line, or a few teaspoons at a time over the course of hours, they do ok. By the way, all of my Otos never seemed to notice the accidental overdose. Over 3 tsp/per gallon that accumulated over 2 days. (Sadly my first dwarf gourami couldn't handle it.)