trying to figure out cause of death. Fish tank is 150 gallon, heavily planted , showing 0 nitrates, 0 nitrite, 7.0 ph been running for 5 years. Stocked with all adults 6 angels fish, 2 keyholes, 7 brilliant rasboras, 2 Bolivian, 5 hatchets, 7 cardinals , 7 rummynose, 3 sae, and assorted corydoras.
Decided to add fish without quarantine ( dumb), added 6 additional rummynose, 6 additional cardinals and 4 lemon tetras and 5 diamond tetras. Two weeks later all cardinals, most rummynose (2 left) and all lemon tetras are dead . Remaining fish including diamond tetras are alive and appear fine. All remaining fish are eating and appear healthy,
I cant figure out what killed both the new and existing cardinals , rummy nose and lemon tetras but left remaining fish OK(for now) . Tested water everything is stable , I don't know what I'm supposed to treat. Any suggestions will be appreciated.
Decided to add fish without quarantine ( dumb), added 6 additional rummynose, 6 additional cardinals and 4 lemon tetras and 5 diamond tetras. Two weeks later all cardinals, most rummynose (2 left) and all lemon tetras are dead . Remaining fish including diamond tetras are alive and appear fine. All remaining fish are eating and appear healthy,
I cant figure out what killed both the new and existing cardinals , rummy nose and lemon tetras but left remaining fish OK(for now) . Tested water everything is stable , I don't know what I'm supposed to treat. Any suggestions will be appreciated.