That's why I want more parts like Jack's 321, MasterBlend, or the VitaGrow I use. They're multiple parts which allows you to lower the N if you need to because one part is the calcium nitrate. I used to have a much better opinion of MegaCrop than I do now. They seemed much different when they first showed up but now they're just like most of the other nutrient companies with shiny labels and product names like Sweet Candy and Bud Explosion. At first they claimed to be a 1 part solution. Now they want growers to use another 5 products they sell to get "Maximum" results.
Epsom Salts is not actually salt. It's magnesium sulfate.
"Epsom salt takes its name from a bitter saline spring in
Epsom in Surrey, England, where the salt was produced from the springs that arise where the porous chalk of the North Downs meets non-porous London clay.
Magnesium sulfates are common minerals in geological environments."
en.wikipedia.org