Before you fork out the $200+ dollars on your calcium probe.

[gogol]

I was looking to buy a couple of probes/monitors to test my water with better precision. While looking at Calcium probes, when I came across the following article. Might be interesting to some,

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

 

[ECFENCING]

Thanks for the link

I'll continue to use my salifert calcium tests

 

[Sunny]

Good read.