As I've mentioned in other threads for years, I use Instant Ocean and boost the typical 360 ppm calcium by 70 ppm with Dowflake (and magnesium by 150 ppm with MAG flake).
Folks are now thinking about the new Dow formulation with extra bromide, so I wanted to pass along my thoughts on how it impacts this particular use.
A 70 ppm boost to calcium will boost bromide by about 2 ppm (about 3%). That is a small change (likely within the specifications that any salt mix will have for bromide), and at a 1% per day water change rate that I perform, it is added over a 3 month period.
IMO, that is no concern at all.
