Copper in storage tubs

[Steve]

I was going to borrow some stock tubs to do my tank change in. Gary told me he had used copper in them over a year ago and since then they have sat empty. I know copper is a no no for corals and inverts but I will only be using them for a couple weeks. Just looking for a little input. Wonder if the rubber tubs soak up copper and if they would leach it back out. Appreciate any input. Or if some one has a tub that has not had copper in it that I can use. Thanks.

[Viggen]

As stated I did one copper treatment in the tubs and now that I think of it I also did a prazipro treatment in the tubs

I do have a 300g tub which has been sitting outside for a few years now, I do not believe it has ever had copper in it.  The tub is owned by aquarium etc.

I didn't set the tubs outside today, forgot to do so before I left.  I can put them out later this evening or tomorrow if out decide you want them

[Steve]

Thinking about lining these with plastic drops used for painting. Anyone see any issues with that?