Hey.. I have pretty hard water at my house (I'll get the exacts tonight), anyway we have a water softener which I use to use Sodium Chloride with but I switched to Potassium Chloride a few months back. Anyway, is the Potassium Chloride safe for the aquarium? I never even thought about up untill this past week when I was trying to figure out why eels will not live in my tanks. Anyway, I can get water bypassed from it if I need to.. any thoughts?