Air Toxins?

Seeing signs of Mg deficiency. Plenty mg available good ph , any medium(but soil mix with cocoa). I found paint cans of toxic shit near my air supply and in the building. Since I haven't solved this prob with nutes i'm thinkin I may be on to something here. Anybody have the lowdown on airborne toxins and it's effects on home grows? Holy shit! thinking as I write, My air I pump into the water could have some bad effect as well! How good is charcoal on toxic shit?

I was reading your other thread. Modern households are LOADED with toxic chemicals! Without a doubt this will affect the heath of plants AND people. Obviously some houses and/or individual rooms can/will be worse than others. When trying to solve a mystery..."Once you have eliminated that which is impossible, whatever is left however improbable must be the answer." Good luck.