I've had 2 clownfish for a week which died this morning and I don't know why, other than maybe they were sick when I got them. I have no quarantine tank but there were no other fish in the tank. They were fine last night.
Ammonia was 0, Nitrite was 0, Nitrate was 10, salinity was 1.023, temperature 76. I have a 20 gallon high with Koralia 425 powerhead, 25lbs aragonite, 20 lbs live rock, about 45 snails (I ordered 8) and the fish were eating both Mysis shrimp & NLF .5mm pellets.
My question: Other than a water change, is there anything I should do before getting other fish?