first reef, is tapwater safe in a starter nano?

[EmilyB]

Calgary spring water run-off isn't fine.

In the years I've been in this hobby, the stores using it have always had problems in the spring. And the tap water users have had their problems as of late as well. All I know is I was going through RO/DI filters like no tomorrow during the early spring.

When you have a lot of money invested, why risk it ?