Good tip on the Kalk. Do I even need Kalk until I add low/medium light coral? Will it help the LR?
You really shouldn't need Kalk
until you get some corals or your coralline algae really begins to take off, but this is all dependent on how much Ca
is in your salt mix from the beginning. IO is notoriously out of balance between Alk
, with Ca
normally being low and Alk
being high. My Ca
level with a newly mixed batch of IO was around 350ppm. That is "ok" but not great, IMO
. I like to stay around 400ppm of Ca
Bottom line: You shouldn't need Kalk
in the beginning (not at all during the cycle) but then you will need to test for Ca
to see what is going on. If they are a little on the low side, dosing Kalk
certainly won't hurt. It will precipitate out PO4
which is a great thing.
Don't worry so much about the chemistry right now. Just get your tank built and we can help you with that later...