Slappy Kincaid
Aquarium Advice Apprentice
I have a 30 gal planted tank. My fish keep dying, one at a time for no apparent reason. I've had my water tested and everything is within normal parameters. The fish show no symptoms, just turn up dead about once a week. New fish are usually dead within 72 hours. I think it is bacterial, but I can't match it up with anything I can find online. Even if I don't add a new fish, established fish just randomly die once a week. I have a tank with mostly tetras, 2 mollies, a pleco, and 2 rasboras. I can't figure this out. Any suggestions on how to approach a mystery illness? I'm thinking of just burning the tank and starting over.