I did my own research. Took me only a few hours thanks to google. Seachem Prime isn't based on sodium thiosulfate like so many people claim. Their website is vague about what the actual ingredient is, which are complexed hydrosulfite salts. Google searches reveal it is also know as sodium dithionite. It's simply another reducing agent. However, in water, it decomposes into thiosulfates and bisulfites. If you want references you can google it. I attached a screenshot of something I found, too. Why would Seachem say this is "proprietary" when it's clearly not?
