Man i told you not to argue piss with me...and what do you do? Your obviosly a complete moron, noob, shitty grower, but id guess all three. Urea is a main component in lots of fertilizers but its processed. Its not in the form of your piss dumb ass. Its dehydrated if its still in its natural form in plant food. People dont piss on their plants for a reason. Its gross. Its fucking nasty. I mean in the appocolypse do whatever the fuck you want to stay alive, but id kick someones ass if i smoked their piss fertilized weed. Its an unstable blend of potentially harmful and un measured fertilizer. And did i mention its disgusting? Dumb ass.
And as for calcium, and magnesium...i did say cal mag and not just calcium. Unless hes running a well over a calmag deposit hes going to need to supplement. Both calcium and mag are almost macro nute status and 98% of guys i know run it, the others ammend, kinda like how you run your mouth. Pppffff, calcium levels in water, everyone i know runs 100-200 ppm cal mag and even if your base ppm from the tap is 200....how much of that is calcium? Are you gonna go to a lab and pay to get it tested? Nope, just add calmag, and no piss. I bet your grow room of two plants smells real good after you piss in the plants huh? Nasty.