Chlorine? Not sure that's good for the plant..
There are different kinds of chlorine ions.
When people think chlorine they think "bleach", but table salt has chlorine in it as well.
Seachem should have labeled it as chloride because straight up chlorine is a gas.
Look up using HTH pool shock as a root rot preventative, this is calcium hypochlorite and it can be used pretty strong before it harms the plants. To be honest, I am not sure how much is used, I haven't looked at the technique in a while.
Regular home use bleach is a 6% solution of sodium hypochlorite, it's the sodium that does the most damage, because that dissolves the wax cuticle on the roots as well as other things.