That's a really interesting idea. But I think you are aware that copper is toxic to many critters, including shrimp, perhaps your fish, maybe some plants, definitely microorganisms (it can be used as a medication). I think if you do it you perhaps could try for a local biotope tank. Collect plants and possibly minnows or water critters from your area. They may be more resistant. The copper will probably be high in your tank.
I collected some local rocks, but then I found out the green ones, serpentenite, are toxic to many plants, so we have endemic plants that don't mind it, but I didn't want to risk it with my aquarium plants. An innocuous looking slate like rock I collected was driving up the pH in a tank so I had to get rid of it too. So one has to experiment, research these things.
I live near the gold country in california and I recently collected some plants from one of our rivers and tried to grow them in a 2 1/2 gallon. Something in there was getting smelly and I tossed everything but a few plants but those are now growning in my tropical aquarium. I have no idea what they are, but they trap pearls of oxygen on top of their leaves. Very cool.
Who knows what you might discover if you go collecting...
I collected some local rocks, but then I found out the green ones, serpentenite, are toxic to many plants, so we have endemic plants that don't mind it, but I didn't want to risk it with my aquarium plants. An innocuous looking slate like rock I collected was driving up the pH in a tank so I had to get rid of it too. So one has to experiment, research these things.
I live near the gold country in california and I recently collected some plants from one of our rivers and tried to grow them in a 2 1/2 gallon. Something in there was getting smelly and I tossed everything but a few plants but those are now growning in my tropical aquarium. I have no idea what they are, but they trap pearls of oxygen on top of their leaves. Very cool.
Who knows what you might discover if you go collecting...