Sounds like a fair-weather hero the old silo keeps. I’ll give the rusted coil a try, but don't expect the wheat to double its thirst just like that. Copper does have a reputation for helping with fungal fights, not so much for conjuring extra rain. I'll plant a test plot, watch the moisture meters, and if I see a miracle, I'll give you a story about the day the coil turned the fields into a waterfall. If not, I'll at least have a funny anecdote about a rusty relic that tried to make a farmer rich. Stay tuned.