Hey everyone here's a question I haven't seen yet, I have a 55 gal Red Bellied Piranha tank and to add a piece of "bad ass" decor, I put in a real coyote skull that I got from a store in NYC. I know the skull was professionally cleaned, but not by any chemicals or bleach. I was wondering if this was extremely hazardous for my water. All of my levels are normal and so far all that I have noticed is that the skull has a layer of algae on it. Anyone know anything? I know I'm probably not the first person to try this, and it really does look cool.
