So I'm preparing to quarantine a recently purchased melanurus wrasse but I know they need sand to feel comfortable. But I've read sand absorbs copper and other medications unless it's the right kind so I decided to place an order on Amazon for sand which wouldn't absorb stuff and while I was waiting, added some DT sand in a container so the wrasse would feel alright while I waited. I removed most of the sand however there still remains some sand on the bottom of the QT that I just cannot pick out. How badly will this affect the copper dosing and should I remove it entirely or would I be able to work around it by maybe dosing a bit more copper than usual (Checking with an Hanna HR of course.) I'm not sure. Any thoughts or suggestions?