Me and the missus-to-be moved into a brand new house about a year ago. Said house came equipped with a sprinkler system for the yard. Now, being the environmentally conscious couple that we are, we decided to re-do the back yard. “Out” goes most of the water-thirsty grass and “in” goes a lot of drought-tolerant native plants (and 12 cubic yards of mulch, but that’s a different thread.)
Now I want to convert my mostly useless sprinkler system into drip irrigation so I can direct water exactly to the plants that need it. This will require re-purposing some of the sprinkler heads, but a lot of them won’t be needed and I want to cap them off a couple of inches below the surface.
But – and this is the crux of my problem – I want to be able to find those capped-off heads later without having to dig a lot of holes and hoping to get lucky.
So far the solution I’ve come with involves gluing either a rare-earth magnet or a stainless steel nut inside each of the caps, the idea being that later I (or future owners) could come back with a metal detector and locate them. Will this work? Will a metal detector detect magnets? Will strong magnets like that be any easier to find than plain steel nuts? Is there a better way to make these hidden-but-findable that I haven’t thought of yet?