Does any1 have the scoop on APIs aquaspin water parameter reader? My lfs uses it for testing water. (I currently run trident/apex) but my trident is reading alot lower than my hand testers(hanna) and my LFS api aquaspin machine. And yes i have recalibrated my trident already didnt change. Any help would be great. Torn on what to follow and use as far a numbers. Ill attach my lfs numbers on the paper/ versus my trident readings. ..