Back to your original question tho - how to NOT transfer some of that copper to your DT. I've been thinking about this as well, just to come up with a bullet-proof protocol for any new introductions. How to prevent untrusted water getting in?
My thinking, happy to be corrected:
- Drip acclimate like mentioned earlier, double the volume, throw away half, double, toss, etc.
- When fully acclimated, transfer to another container full of JUST DT water by net or hand - minimizing water transfer.
- Give it some time there, then again transfer by net or hand to DT.