The company in question is no bueno for me. As of now I have done two test. One for parameters and one for mixing procedures.
For the parameters.
potassium is extremely low 340
For Mixing
If you mix it with a strong pump I notice the water gets really cloudy and i experience dropped in alkalinity which is what most people are experiencing. I had a controversial post on the coral source about it so I won't post what I found while mixing the second time because it becomes a fight.
I've been using fritz rpm for awhile. No mixing issues at all. Just as clear if not clearer than tropic marin pro. My only issue is my box is giving me 9.5dkh at 1.025. I was hoping for 8.5ish.