mag flakes look dirty

[brandonberry]

I just made up a large batch of two (really 3) part solution the other day. I noticed that the mag flakes I got, made by North American Salt Company (I think), were silghtly grayish in color. When I mixed the solution, the water was initially slightly grayish as well. After sitting for a while, the grayish impurity seemed to precipitate to the bottom. I am wondering if this is normal and safe to use, Also, I'm assuming I probably do not want to shake it up before using it, but rather pour off the top and discard the precipitate. Advice?

[Randy Holmes-Farley]

If you mix Epsom salts and MAG flake, you typically get some precipitation, probably calcium sulfate. That type of precipitate is OK to dose. Was it just MAG flake or a mixture?

Many of these materials have some insolubles anyway. I'd just let them settle out and not dose them.

[brandonberry]

I made the 5/3 mag chloride/mag sulfate mixture. The raw chemimal that looked dirty was just the mag chloride though. thanks for the quick response.

[Randy Holmes-Farley]

:thumbsup:

Happy Reefing. :)