Ive got a 4 foot square cage,and when the foam fell apart I made a square float out of 4" sewer pvc.Its thin wall and pretty light.It also keeps the feed in the cage.I made it so it goes around the outside of the cage so I didnt have to modify the cage,just drop it inside the pvc.

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Some days you get the dog,and some days he gets you.Every dog has his day,and sometimes he has two!