C balance, calcium residue


New member
when I pour in C balance this morning, the Ca portion. It keeps forming strings of white residue. What is going on, is my alk too high?

Randy Holmes-Farley

Reef Chemist
Premium Member
That is normal for the alkalinity portion, but should not happen for the calcium part. You certain it is the calcium portion?
here's what the alkalinity part can look like:

What is that Precipitate in My Reef Aquarium?

from it: