Water Hardness Measurements Help Please :)

Water hardness can be confusing 

There are more different units used to measure hardness than anything else I can think of. Water companies can use any of half a dozen units, but fishkeeping uses just 2. Some fish profiles use one, some use the other, and even Seriously Fish profiles don't all use the same one.
But it is easy to covert any unit into any other - there are hardness calculators on line which can do this for you.

The other thing to understand is that some units have more than one name. So mg/l CaCO3 is the same as ppm. Degrees hardness and dH and degrees H are all ways of saying the same thing, and they are the same as German degrees.



If you have found the hardness section on your water company's site, copy and past what it says and we'll tell you which numbers you need 

That's good news as far as the sterbai cories are concerned. Your 7.28 German degrees is right in the middle of the 1-15 dH range (ie German degrees hardness) required by sterbai cories. 

Thanks all very helpful!