- Joined
- Mar 19, 2019
- Messages
- 275
- Reaction score
- 182
Does anyone use fritz part1 alk? My calcium is 450, ph 8.3 and alk is 6.6. 25% weekly wc with fritz blue box and ro water bring my alk to 7.4 ish but it always drops. I have zoas and gsp so far. What should I do to bring my alk up and keep it stable.


