Tropic Marin Pro Alert -- Warning!!!-- Has anyone else seen this?

[George_N_Jo]

I just got a new batch of Tropic Marin Pro and have been doing water changes. I made up a batch and let it sit about three days aerating before I was ready to do my water change. I tested it and found it to be very deficient in Alk and Calcium. I figured I waited too long and chalked it up to precipitation. Thus I supplemented to get it up to par and did my water change.

Mg 1270 ppm
ALK 6.7 dKH / 2.40 meq/L
Ca 350 ppm

I decided that I would do a water change on my other system so I made up water and added my salt. I then gave it about 6 hours to aerated and then tested it to see where the level were. Again it was very low.

Mg 1500 ppm
ALK 4.8 dKH / 1.71meq/L
Ca 300 ppm

We are encouraged to purchase these custom blend salts for the advantage of higher Magnesium, Alkalinity, and Calcium, But this type of things happens. I an very concerned for those whom do no testing at water change times. I encourage everyone using Tropic Marin Pro to test vigorously prior to do water changes.

I would have been willing to chalk one incident up to my error. But am not will to believe that two incidents such as this falls on me making an error in the handling to the mixing of salt and water. Some thing is not right here.

Has anyone else seen this?

George