I also have the black drainage tubes that are looped. They way I kept them together was I used large zip ties. If you go to Home Depot or Lowes and to there electrical department you will find very large (long) zip ties. They work great. My kids do not chew on them and they hold wonderfully. If I had long ends left I cut them off and shaved the ends with a metal shaver to soften the ends. The tubs work great. I hope this helps. -- Misty Hosier Ferret Lover [log in to unmask] http://www.myspace.com/mistyrose33 [Posted in FML 5998]