Yeah. Dosing copper you just killed all your coral/invert/live rock/sand possibly the silicone in the tank as well. Just to clarify, the copper leaches into the rock/sand/silicone then with leak it into your tank indefinitely.
Like I said, you need to research reef tanks before you just jump in and do it. You need to buy new sand and rock and pretty much start over now. Also, for the sake of the animals, do NOT cycle with live animals. It's like locking you in a room with 20% oxygen and poison for 6 weeks. Use a cocktail shrimp. Buy a pound, use one, eat the rest. Its a win/win.
How i started in reef tanks, I read MR and RC everyday for about 6-8 months. If you jump in this, like it seems you did, you will waste tons of cash and end up hating the hobby for your lack of research and exp.
Please research.