This product contains Arsenic, Cadmium, Cobalt, Lead, Mercury, and Nickel. Chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
When I saw that label, I was like "that's a Seachem product."
Then I scrolled up and I saw that you were talking about Seachem Flourish.
They have really recognizable labeling.
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.
There's a dude on youtube that does a earthbox style fish tank, soil up top, fishies in the res. Probably the most bad ass way to grow pot.
The reason not to use fish is because you'll taste it. Of course the internet still pretends weed don't take up flavors from the soil, only heavy metals and water apparently.
Fish ferts are supposed to be no burn, I think protease has to break down the fish into nitrogen and plants only exude that enzyme when they hungry for fish. Of course i could be wrong I make up lots of shit to fill the void of stupidity that exists in drug dealer plant growing communities.