Does This Test Kit Test All Types Of Hardness?

[mike_nofx]

I havent got a hardness test kit yet, and i was wondering if this kit would check all the types of hardness there are (is there 2 types??). Im just learning about water hardnesses, and i thought it would be better to learn with a test kit at the same time, and was makin sure it done everything.

The kit is on eBay, Here It Is

 

[Bloo]

Not a clue what exactly that kit tests for, but all you're really interested in is kH and gH. kH more importanly if you have a planted tank and need to work out your CO2 levels.

If you want to know more about pH, kH & gH, have a look at this article