PVC Drip Irrigation is an inexpensive and easy to build method for watering your backyard garden. After adding a PVC drip irrigation system to your garden you can expect stronger vegetable plants, fewer weeds and a lower water bill! - Our Secret Garden
PVC gravity feed drip irrigation - Watering chickens in the winter.this could work with a bigger bucket with de-icer in it, run pvc with chicken watering nipples wrapped in the pipe warming wire (can't remember what it is called). I think it would work.