Question

[Cultasso]

Would it be better to use mineral water or Tap water, when filling a tank for the first time ?

 

[OohFeeshy]

Tap water. With dechlorinator.

 

[SarahFish]

and if you don't have dechlorinator, just let it get old for about 2-3 days and then you'll be able to use it as like being treated with dechlorinator