Continuing the discussion from Pseudoscientific terror ended fluoridation in Calgary, now kids' teeth are rotting:
Responding to nemomen and OtherMichael:
This wasn’t an incident with my fish tank. It was for all fish tanks in Los Angeles. You didn’t have to treat tap water until a couple of decades ago when it was announced in a mailer to all DWP customers that the water was no longer safe to go directly into fish tanks. Maybe this is apples and oranges with fluoride vs. chloramine, but I associated it with fluoridation at the time. (Either way if it isn’t safe for freshwater fish? Canary. Coalmine.)