So how do I keep my Ca at > 400

[spongebob]

I'm just going to start the Zeo thing, OldSalt says don'r use Kalkwasser to add calcium.

How do I keep the calcium at >400 without a calcium reactor. The sump area of my tank is full, and the wife says no more goodies for the tank, so a Calcium reactor is out.

[Aquatic Image]

You could use Kents Turbo Calcium.

[wasp]

This may be of interest. This is what I use. Used to put it in daily by hand, now I use a dosing pump. http://www.advancedaquarist.com/issu...l2004/chem.htm