Im in the process of making very unique aquarium items for 'saltwater'... let's say a SpongeBob pineapple house 
I have made 2 using both plasti dip and epoxy resin, 1. how do I test for toxicology and 2. Which do you think will last longer in saltwater

I have made 2 using both plasti dip and epoxy resin, 1. how do I test for toxicology and 2. Which do you think will last longer in saltwater

