(09/16/2008) - I was amazed at how fast and easy this kit works. I accidentally got a snail caught between a kent scraper and the front acrylic panel, it left a deep scratch about an inch long. I was dreading the effort it would take, but this kit removed and polished it in about 10 minutes, leaving it looking brand new. Best of all, It worked with a tank full of water, fish and coral.