If calcium is low and alkalinity is OK, I'd boost it with calcium chloride. I do that to every batch of IO. I also boost magnesium in every batch of IO. [/B]
Excuse me for crashing this thread I came across!
How much do you add to the new sw batch in lets say 25gals?
I would like to boost my calcium if Reef Crystals is lacking eventhough I use limewater makeup with an ATO.
