I'm completely aware that painting a pool is typically frowned upon, nevertheless that's the direction my guy has decided to take. He wants to use an epoxy paint, so has to remove a couple of layers (not guilty, previous owners made this mess) of paint off of our fiberglass walls. Just wondering if anyone has done this and what process they used to do so. I hear him talking about sandblasting, but the research I've done says that's a HUGE mess. Also, have heard him talk about walnut blasting and water blasting. I've already powerwashed the walls with 3000 psi. I can still see blue and white paint on top of the fiberglass, and no sight of the fiberglass itself, so powerwashing isn't a solution that will work for us. Floor of the pool is gunite. I've seen one guy on youtube say to use 300 grit sandpaper- yikes, our pool is 20x40. Seems like that would be a long, tiduous, never ending task!!! Help!??