Re-test the water, I doubt the ca level is that high, you most likely would have precipitation event if it were.
It will not poison the fish, it will irritate the corals though.
I don't have a test for alkaline? Guess i goofed someplace huh? Gonna go do another calcium test, might have messed up :thinking: Be right back........
Alkalinity and PH are related but not the same. A balance needs to be maintained between alkalinity and calcium. A high calcium could indicate low alkalinity and low calcium could indicate high alkalinity.
Read this... https://www.saltwaterfish.com/vb/show...threadid=45812