I am going to upgrade...

[WarDaddy]

I am etither getting the ACIII or ACIIIpro.

Here qre my questions:

Conductivity - What does it measure for? Salinity?

What other advantage does the Pro have? I lose a Ph probe, that is a con.

[clp]

There are 2 practical uses for cond. for a reef tank.
- In low range, conductivity can be used to measure how pure your RO/DI water is. It is a good indicator to know when to replace your DI cartridge.
- In high range, conductivity can be used to measure the salinity/specific gravity of your tank.

Take a look at http://www.neptunesys.com/comparison.htm for a comparison table between all of our controllers.

Curt

[WarDaddy]

OK, I ordered my AC3... Whoot... I can monitor and configure from my bed now!