Hi,
I've over 50 cardinal. All are fine until one fine day. I saw 3 dies off without any symptoms.
Then I realise some of them has white spot. So I raise the temp. I off the therm when I see no ick.
However, whenever I wake up, I will see 1 die each day. They will first turn around and stay at the bottom of the tank and next morning, it will die. No other symoptom can be found?
I did a half tank change.
what's next?