so I'm just getting started with my 40 gal FOWLR tank. I used tap water to start the tank...now I'm seeing people talking about RO or RO/DI?
Can you tell me a bit about this?
Is there an affordable kit to install under my sink to only use for when I do water changes and top off?
Is it a system that has to constantly run into a container or is it a filter that can be used upon demand?
Thank you
Can you tell me a bit about this?
Is there an affordable kit to install under my sink to only use for when I do water changes and top off?
Is it a system that has to constantly run into a container or is it a filter that can be used upon demand?
Thank you

In my opinion, the use of tap is just too risky. Quality water for both mixing salt and using for top off water is critical.

