Really stumped on what is going on.
tank has cycled, and is about 2 months old
40B w/20g sump, skimmer, macro lighting on opp timer.
Not my first tank had a 20L over a year no issues
Started w/ small tomini tang and solon fairy wrasse both eating aggressively and looking good. One morning both dead. All above tests results
Got a clown a week later. 2 days later Dead. Again eating and swimming no signs of any diseases. " " same thing test results
Firefish, a few days later. same thing next 3 days dead.
No fish were showing signs of sickness and just ending up dead the next day. I really dont want to kill anymore fish.
All Inverts(CuC) are fine, Zoas are fine and growing. Sps(relatively new to the tank) have full polyp extension and looking good.
Tank was cycled w/dry rock in display and live rock in sump so I dont think its predation.
Any suggestions? I don't want to keep killing fish.....