Hopefully he realizes that you can only go but so far in convincing someone or getting them to see his point on the internet.I try to just make my point and move on.He got pretty heated in a thread.
I remember quite a few years ago a company marketed this stuff called Waters of the World....it was a line of supplements or additives to help mimic the water make up of a particular location where certain fish are found....just a teaspoon full or a few drops lol.The betta water is nothing new really as it is that same type of junk.