Originally Posted by Symon
I use a reefkeepr II, this thing is awsome, aswell as allowing me to change my timers on lighting and wavemaking, it also monitors ph and temp! I do wish they had something to monitor cal, nitrates ect!
But i am also sure that if they had it , it would have a price to match it's abilities!
The Cal tester runs about $250 give or take $25.