1 fish, 2 fish, dead fish!

[fishoholic]

The biggest thing I found with QT tanks (I've lost a few fish to ammonia spikes in QT tanks in the past when I thought doing large weekly water changes was good enough) was that you have to do a 40 to 50% water change every 2-3 days. Which BTW really sucks when you have a 110g QT tank running. I used more salt in the 2 months of QT'ing my fish (when they had marine velvet) then I usually use in about 5 months. However it was the only way I found I could keep the ammonia and nitrite levels in check.

I agree it is best to bring salinity down slowly but it is very important to raise the salinity at a very slow rate. When you're ready it should take about 2 weeks to slowly raise the salinity back up.

[cuz]

just a curious question nora.. but where have you been purchasing your fish? There has been a lfs in lethbridge that has been causing grief for alot of people. (granted proper QT may not have been met) The lfs themselves admitted that their entire last order may have fallen to marine velvet!!