I have some decorations that will be going above the tank, close to the water line but not in the tank. I was wanting to seal them since I don’t know what type of paint is on them. One claims to be reef safe. I was going to seal them with either marine polyurethane or 2-part epoxy. I’ve been told the UV-resistant ones are the best. This is a reef tank with lots of expensive coral and fish, I want it to be 100% in the clear. Please let me know.