i do use commercial drinking water

and i use it for my new upgraded tank

can you imagine me doing it?
maybe i'm just too paranoid
but from the answer above, it is possible that tap water in my place is hard water
maybe a strong one because i often see iron deposits, crusty calcium and lime deposits all over my bathroom...no matter how i clean it, it appears again less than 3 days
that's why we avoid drinking tap water here...we always drink commercial drinking water
then if i want to use tap water here, i might need conditioner, declorinator, and and other stuff??
will it really work to soften the water?
compas is my RES and i'll do almost anything for him to be happy and healty for the rest of his life