I was chatting with one of the lfs guys. He is a real minimalist, doesnt even run skimmers on the tank, much less reactors and whatnot. Anyways he was asking me what kind of calcium in in natural seawater. I was like, duh, I don't know. He said Calcium Chloride (makes sense to me!) and then he...
Angry John recommended these two readings on the subject of pH, calcium hydroxide and alkalinity:
(1) What is preferred test kit for alkalinity?
(2) What is preferred...