This worked the first time. I'm excited about it. The replacement went well...Do it yourself and save some money...ask me about it on the fishtank tv forum. Thanks for checking out my How to replace your ballast on your Aquarium lighting videos. If you like what you see or hear rate this video or add a comment. Ask me questions. For more video, Live chat and custom user profiles to show off your planted tanks planted, reef or other fishtanks, check out www.fishtanktv.com