I’ve had my current tank running for over 2 years now. I have been blessed with really healthy and thriving fish. No fish losses to date with never any sign of significant disease. Tank problems I’ve had a few though... I decided to vodka dose and ended up with a crazy Dino outbreak. Was able to beat dino using the dirty method. Went on vacation and had my teenage daughters best friend watch the tank for me and somehow ended up with a gha outbreak that was out of control. After several months, I was able to finally beat my algae issues also. I’m in smooth sailing mode for right now, trying to stay that way, lol!