On the ones Will set up for me, he drilled a hole at one end in the floor. Then attached a fitting that accepted a length of neoprene tubing. We have a bit of a shim under the opposite end from the hole to raise it at a bit of an angle and the tubing allows the water to drip into a bucket. He placed a bit of coco coir (the kind that you use to line a hanging basket) over the hole inside the enclosure, and then the feeding tile is placed on top of that in order to keep it in place.