Cross-Slide wrote:

RTFM

Keep in mind that most conduit is Galvanized (Zinc) plated. *No
Welding without removing the Zinc.
_kevin

If you do breathe the zinc fumes, drink lots of milk.

THe plants may not care for the zinc either, as it corrodes off
I know that everywhere on my roof where there is some galv metal,
there is no moss down hill from it.

jk