mainermark
New member
I have a 90 gal reef tank 1.024 sal zero nitrates, etc. hardness 425, ro system, I have plenty of other fish, clowns, goby, coral beauty, cardinal all for over a yr. I cant seem to keep the yellow tang. I provide algae strips 3-4 per week. After 3-4 months the tang becomes slow and just dies. ANy idea why? this has happened 3 times in the last 16 months. no other fish die. thanks