- Joined
- May 30, 2020
- Messages
- 1,173
- Reaction score
- 877
My rodi unit has been always 0 tds out of the unit. I run a 5 stage spectrapure. This week I made a lot of water for new tank. Did a membrane flush and now my tds gauge goes back and forth. Between 0 and 1. My water in from the well is 320tds. Is it time for a new membrane already? The di resins still look the same colours as when they were new. What’s acceptable tds for a mixed reef