Your opinions on best tests

[ScottoMacD]

I am having a problem finding a couple of reliable tests for the salt system.

I am looking for opinons on tests kits for the two following:
1 - Calcium
2 - Copper.

I have tried 3 or 4 different ones for each with mixed and limited success.
Since I am a true freshwater guy and this salt water thing is still quite new to me I figured that you all could help out with some recommendations.

Which ones do you use? Why? How do you find the accuracy?

Thanks very much all.

 

[mogurnda]

I have tried just about every Ca test, and I prefer SeaChem. Very sharp cutoff. Salifert is good, too. Avoid Red Sea.

I haven't used copper in years, so I have no idea about that.