Calcium Chloride & Soda Ash

[Megalodon]

Yeah I thought the days of Dowflake were over unless somebody still had some if the old stuff.

I use Randy's DIY two-part using baking soda and Kent Turbo Calcium.

[reefan]

I used to use the Dow brands but eventually had some issues. I later read somewhere it is only guaranteed to be 37% pure calcium clhoride. I would go with BRS or Fauna Marin brands, much cleaner with no residue to speak of.