Auto-Waterer (For Plants, Pet Water Bowls, Etc.)

In this Instructable, you will learn how to make a simple, easy auto-waterer for plants, a pet's water bowl, or something else.

The auto-waterer works because for water to flow out of a closed jug, air must go in. The auto-waterer has a jug connected to two straws, one of which (straw A) ends above the other (straw B). Air goes in straw A and water goes out straw B. When the water level rises to cover both ends of the straws, air can no longer enter, so water will no longer come out. If water is taken out, the process begins again.

Supplies:

• Large jug
• Two straws

Tools:

• Drill
• Scissors
• Hot glue gun

Drill two holes in the bottom of the jug for the straws.

Stick the scissors in the holes and rotate to widen the hole until it is the width of the straw.

Add a straw in one of the holes.

Hot glue the straw. Try to make an airtight seal.

Repeat the gluing process for the other straw.

Trim the straws so that one ends about 1 inch above the other. You can adjust later.

Use a small cup to test near a sink. If there is a leak, the watering system will not stop even both straws are under water. If this happens, re-seal and test again.

Raise the structure as needed and setup as in the test.

When refilling (or testing), fold up the straws and tilt the bottle. Lay the system sideways when not in use.