I have been meaning to finish a tank that I plan on gifting to my significant other, and I wanted to use a Bioshock figure as the centerpiece. It is made of PVC and was painted with an acrylic-based paint. I have read about many people facing similar difficulties, but in slightly different situations. Could someone recommend the best clear coat epoxy or spray to use on this figure to insure that it won't degrade or release any harmful chemicals in the water? I don't want to ruin it by using the wrong sealant but at the same time I don't wan't it to be detrimental to the fish. I heard of people using Krylon Fusion Clear Coat for aquarium use, but I am skeptical because Krylon doesn't recommend using any of their products "below the water line". Any help or advice would be greatly appreciated.