I'm going to assume the fake rocks are made of styrofoam or expanding foam. The only "animal safe" paint is krylon fusion. If you are using anything other than that, be sure to cover it with krylon fusion clear. ALL sides must be covered with several coats of clear coat to ensure it is 100% sealed. One small area that is not and chemicals can leech into the tank and wreak havoc on your inhabitants.

When I built my steam punk tank, every piece that was painted got roughly 10 coats of krylon fusion clear coat. Funny how I keep mentioning krylon fusion, huh? Like it's important or something lol


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