- Joined
- May 18, 2018
- Messages
- 613
- Reaction score
- 974
I have been in this hobby for 55 years and have always used treated tap water for my FOWLR tanks. My city water averages 80 ppm for TDS. I have algae but nothing serious. I raised a Majestic Angel & Powder Blue Tang to age 16. It wasn't until I got into keeping corals that I started using a RODI unit for the coral tanks. IMO Will a RODI units make it easier to maintain a reef tank-yes, but don't let the lack of one keep you from enjoying this hobby.