I want to build a decoration for my new tank, but I am not sure what materials are going to be safe to use and if this is even a project that's possible. The decoration I am hoping to build is a miniature dock to my tank that's partly above the water line, just like an actual dock is just above the water's edge. Would it be possible to do something like this, that's able to support the weight of a small turtle? If so, what materials could I use that'd be aquarium safe? Thanks in advance!