Prob after water change

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Lauramichelle

Aquarium Advice Activist
Joined
Dec 11, 2011
Messages
127
I have a 20 gal, coral only, and do weekly 5 gal water changes. I get my water from my trusted coral shop I had my water tested on mon and all was good.
Nitrates 0
Phos .04
Sal 1.025
Cal 420
Mag 1365
Alk 8
I ran a heater and a pwr head in the new water for 24 hrs before and tested Sal prior to use. I did my water change this morning. Changed filters and chempure.
Almost immediately found 1 of 2 pep shrimp dead. Took him out. This evening I found the tips of my purple garp had bleached and one of my zoas had stringy things. So far, the other pep seems fine and corals too as far as I can tell. I tested sal, nitrite, & amo.
Sal 1.025
Nitrites 0
Amo 0
I'm very worried of what may have happened. What may have gone wrong? Remember that I have no fish.


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