Tank transfer didn't go well

[GreenSpottedPuffer]

Originally Posted by High tide

I have never used Deltec salt, but I know some salts take a couple days to dissolve properly. Flow changes would not trigger RTN throughout your tank. Unless there is some information you left out, the stress of the transfer and a 40% water change with freshly mixed salt resonates. I never do a water change when I transfer a tank, too much change at once is detrimental to SPS. Ideally you would have started the new tank slowly with some water from your old tank and some live rock, while doing small fresh water change in your established tank prior to transfer.

That wasn't possible. It had to be done all at once.

I still don't see why the transfer would have really caused these kind of problem. Obviously it did but it still doesn't make sense to me. There really were not many changes. The corals were out of the old tank and in the new tank within 30 minutes.

I guess it must have to do with the water change, new tank having something bad in it (I did clean it though with RO water) or just my luck

FWIW, I always mix my salt a day before or less and have never had any problems over the past 6 years.