Simple Homemade Gravity Waterer Bowl

Make this wildly simply 4 Gallon gravity fed watering tray for about $10 or less.

Having shopped for a large waterer for my rabbits I discovered that a most run $20 or more, a 4 gallon could cost me $50, and my ball bearing feeder required refilling too frequently. Please note that the concept shown will work with smaller bottles too. This works with any tray and an airtight bottle of any size. Refilling is as simple as turning the bottle upside down refilling and placing back in the tray.