That's the stuff I was looking for, cheers.Don't use plastic cement. It literally melts the plastic as it bonds pieces together. Too much potential to cause more problems by weakening the surrounding material. Many here have recommended using plast-aid. Amazon.com: Plast-aid 80400 Plastic Pool Part Repair Kit, 6-Ounce: Patio, Lawn & Garden.
Bonds completely with the shell material without damaging.