Help!!!!

nima

Member
Hey everyone, I have a reef tank which has been set up for a year and half. My corals are doing great but everytime i put a fish in there it wont take a month and they die.
The symptoms are they get very skiny, breathe heavily and have internal red blood spots on the upper part of body. I left the tank empty of fish for close to 2 months figured if there is a parasite it should die, but now i put a tang in there and it looks like its coming up with the same syptoms.
water quality:
salinity 1.024
PH 8.1
alkalinity 3.0
Calcium 465
nitrate, nitrite, and phosphate very low
Any suggestions?
 
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