this is my 2x2x4 that i just put my panther in about 4 days ago if this helps at all he loves the new set up. I also have a rack that the cage sits on similar to yours and i drilled holes in the plastic bottom of the cage and attached a funnel with silicone underneath that drips into a bucket for drainage and it seems to be working pretty good the weight of the pot in the middle makes the plastic bottom dip just enough so the water rolls down