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.
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.
I'm very worried of what may have happened. What may have gone wrong? Remember that I have no fish.