Hi,

I got ahold of one of those master ater tests and here are the results:

Ammonia - 0
general Hardness - 180 (moderatly hard, very hard)
Carbonate hardness - 110
PH Low range - 7.6
PH high range - 8
Nitrites - 0

What does this mean?
What's my next step?

Btw what is the appropriate water temperature anyway?
My tank is currently at 24C, a friend with a tank said it should be
around 21-22C only??