Can you use purified water for a goldfish?

yes you can use any type of water for gold fish but to be on the safe side i would go out to a store and buy a water clearifyer

well ive had my goldfish for 6 years now and

i have the basics;

4l fishtank,

2 goldfish,

100g fishfood flakes,

thermometer,

and decorations.

and i also use tap water and nothink else.

but i always clean the tank out every

sunday night at 5:00pm at night.

hope this has helped you like it helped me.