Quote:
Originally Posted by GreenSpottedPuffer
..... This is a cycled tank, not just set up last minute for new fish. ....
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We have different QT methods then.
My QT tank is not cycled. In fact, it is empty when I'm not using it.
When I start it up, I do a water change on my display tank. The outgoing water goes into the QT tank. I then mix up a 5g bucket of new water. The next day I start doing daily 25% water changes to the QT tank. It's a 20g tank.
I drain 5g from the QT, siphoning any uneaten food at the same time.
Then I take 5g from the display sump and pour that into the QT.
The new 5g batch goes into the display sump.
Then I mix another new 5g batch for the next day, and so on...
This method helps keep ammonia, nitrites, nitrates and pH in check.
But you mentioned hyposalinity, so I suppose this method wouldn't work for you. Maybe try it without using display water. Just the new water.
At any rate, I think you should try daily water changes. JMO.