Test Kits

Check this gadget out:

CM-750 CHEMTESTER
http://www.sealifesupply.com/medusa.htm

"George Burnt" wrote in message
...
Hello,
I do not have the best eyesight in the world, so every test I do seems way
off according to how I read the colour charts. Last week my kit and my
eyes
claimed that I had a PH of 1.2. Now I know this had to be wrong as my hand
did not disolve when I put it in the tank, so I bought a PH meter and it
recorded a ph of 8.2, which is OK. Is there such a thing as a digital
calcium meter and what other meters would be useful to me? I have found
temperature meters and ORP meters. By the way what is an ORP meter?

So far I only have fish with base rock, and it has been doing great for
four
years, but now I want to take the plunge and go reef. I already bought the
MH lights, next will be all the meters, then a dsb, live rock, then the
inverts.

I am getting the order of things right?

GB