Quote Originally Posted by newcan1 View Post
PE to make bleach as you described, could one use ferric chloride instead of ferric bromide? It seems to be much cheaper. Or ferric ammonium sulfate.
There are advantages and disadvantages to every chemical. I've used Ferric Ammonium Sulfate, but Sulfate inhibits swell, so there is one big disadvantage.

You would have to experiment anyhow, to come up with the right mix. I suggest that you use published formulas.