Salt Mix Residue Safe or No

[CheifReeferNB]

I am currently mixing tropic Marin pro in large 32 gallon batches at 1.026 SG and running an AWC over the period of a week.

Around day 2-3, a noticeable brown precipitate forms along the walls of the barrel and on the water surface.

My question is, is this normal and how would I differentiate a foul mix vs. precipitation?

 

[Sam7]

its fine and normal

 

[Sam7]

some salts are worse some better.....if it all tests out fine parameter wise i would not worry

 

[DmitryB]

Yep, it's fine. But I thought Tropic Marin salt was supposed to be super "clean" from the residue? That was one reason offered for the very high price point.