Usage for hash tag: IWasNotPaidByHanna

I +1 any Hanna product. I use straight across salifert and my Hanna match up very well with them and red sea tests so I trust em. I have all of em except mag and nitrate. Ph one is a Lil tricky to calibrate (for me at least) but a begginers best friend for sure #IWasNotPaidByHanna