Sky high Ca

[Scribz718]

Params:
Ca - 500+
Alk - 9.2
Mg - 1300+
Ph - 8.6
SG - 1.25
Temp - 77f
Phos - 0.02
Nitrate - 5ppm
Nitrite/Ammonia - 0

Params tested with Api, Hanna, and Red Sea

Live stock = mostly zoas, couple lps, couple sps, lawnmower blenny, mandarin, two black snowflake clowns, 4 hermits, 4 astrea, 3 nassarius, 5 cerith, 1 tiger conch, 1 skunk cleaner.

Tank volume 25g with 26g sump. Approximately 40gals after equipment and rock dispersion.

Refugium running with reverse cycle lighting.

Water changes maybe twice a month. Dose alk due to rapid consumption. Ca stays high. Alk ranges from 11.4 to 9.2 over time with no dosing.

 

[Ron Reefman]

Is there a question in there somewhere?

If it's about your Ca level, it's no so high that it should do any harm. What salt are you using for water changes? Have you tested the Ca in it before you use it for a water change? With just a couple of lps and sps you shouldn't be using much alk or Ca.

 

[Scribz718]

Is there a question in there somewhere?

If it's about your Ca level, it's no so high that it should do any harm. What salt are you using for water changes? Have you tested the Ca in it before you use it for a water change? With just a couple of lps and sps you shouldn't be using much alk or Ca.

Main question was would the high Ca and shifts in alk cause a scenario where the water becomes too basic