Originally Posted by Benter
I'm just curious about the salinity thing...is there a reason to run salinity so low then...do you guys not keep a cleanup crew at all in your QT or MT..I just don't see the reasoning behind it being so low..no biggie just got my curiosity up..
No, you do not keep a clean up crew in a QT. A QT is for treatment with various medications etc that are generally toxic to inverts. Your clean up crew is generally a siphon and water changes...inverts, if kept in QT, are generally kept in a different tank.
The salinity, IMO, did not kill these fish. And it is not outrageously low. If it was so fatal, then freshwater dips would not be used as a common treatment. It would kill a fish instantly.
I have never been a fan of the low FO specific gravity because I think it is totally unnatural, a not actually all that useful at keeping many parasites (ick, for example) under control. It is a "textbook" older salinity range and the theory was that it was an anti-parasite thing. And it is pervasive so it is still common. But it is not fatal for most of these fish.
When the fish were dying instantly, I was thinking it was some sort of toxin in there....painting, soap, some sort of organic toxin. That is what tends to wipe out fish rapidly along with chlorine. But this is somewhat more mysterious unless we can correlate it to some cleaning or event.
Might be worth checking for the stray voltage idea.
Can you describe any symptoms of the fish???
What is a further mystery is why the one's from the tank survived fine, and the new fish all die. I'll have to ponder this one. :thinking: