calcium test

[miamishrip]

is there an electronic calcium tester? anyone recommend one?

[bertoni]

American Maraine makes one, the PinPoint calcium monitor. Here's a review:

http://www.reefkeeping.com/issues/2005-04/rhf/index.php

It is useful for people who are colorblind and can't read tests. Otherwise, it doesn't seem all that useful to me.