water hardness

[Canadian Man]

Testing GH is a reef tank wont work. So don't bother testing.

I assume your using Hagen test kits cause you mention both.
Only use the KH part of the test kit.
What's your KH at BTW?

Just to give you some conversion values for the hagen kits;

Basically every drop is = to .2meq/l.
So in my tank last time I mesured my drops were 18 drops which would work out to be 3.6meq/l.

cheers