So, I just did some research about my idea for a potential turtle dock stand. I want to use a natural rock (I plan to wash it thoroughly and boil it or bake it before I put it in the tank, don't worry) for the dock, mostly for aesthetics and for heat retention, and I was thinking about an alternative to PVC pipe to hold the dock up. Namely, I was looking at copper, thinking that I could age it to a nice green, and then use that for the base. The idea was to give it a more natural appearance.
After some Googling, it has become clear that metals of any kind can be hazardous to our friends' health, particularly copper and lead (solder). So even with lead-free solder that I planned to use, the copper from the stand would still risk contaminating the tank, and it could be dangerous. Every opinion I've seen said that it will likely be fatal to at least the fish in the tank, and while nobody said anything about turts, it's enough for me to avoid it.
Now to figure out how to spruce up that PVC instead...

