Things You'll Need
- Empty 20-ounce plastic soda bottle
- Sharp blade
- Clear, flexible tubing at least 3 feet long; diameter should fit fairly snugly inside the top of the bottle
- Aquarium-safe silicone glue
Instructions
Thoroughly rinse the soda bottle. Remove the label.
Evenly cut off the bottom of the bottle.
Push the tubing about an inch into the bottle. Hold it in place and put a bead of silicone glue around the seal to create an airtight bond.
Allow the glue to thoroughly dry before using the vacuum.