My newest addition to my reef is calcium reactor and I had some difficulties to set it up correctly so I was testing water daily for a month or so. I was able to keep something around 9.0 alk. When I was approaching 50% of the reagent of hanna checker I noticed that alk started to raise. I thought maybe corals started to die and they don't consume that much anymore so I was reducing drops from calcium reactor. But even then it started to raise by around 0.1 daily. When I was almost done with reagent the last sample showed me 11.3 and I tested the water one more time using brand new bottle. And I was shocked how different result was. It showed me 8.9. What the heck? Both bottles have plenty of live time, I keep all reagents in the same environment.
Do you guys have similar experience? How to approach stability when I have such drop between reagent change?
Do you guys have similar experience? How to approach stability when I have such drop between reagent change?