Is GH enough indicator to use tap water?

diamonfingers

So I have the water test strips and I did a tap water test and RO water test (has remineralisation filter). The parameters seem very near to my surprise. GH is around the 75-150ppm (great for fish right?) . Do you think its safe to just use tap water for my fish now or there might be other traces that might hurt them like zinc , lead, copper...etc? I will be using Seachem Prime , will that help?
 

A201

Your local fish store most likely uses the same tap you have.
Trace elements / micro nutrients such as copper, zinc, ect. are present in all public water works as well as in all bodies of water. I think you are good to go using your local tap.
 

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