Pin Point Calcium Monior

[Snitter]

Does anybody use a pinpoint calcium monitor or any advice on in it. Thinking of possibly getting one.
Pinpoint Calcium Monitor by American Marine - Buckeye Hydro

 

[Dtech07]

I ran 3 before I purchased my Apex they are nice little systems, easy to calibrate with a long batter life
Cons:
Took up lots of too do to units size, reading can be false if to close or laying near another power source up ton1 point.