This tap can be added to any plastic container if you decide not to use an AutoPot Solid Reservoir or FlexiTank. Simply drill a hole near the bottom of the container and insert the tap. Please make sure you have sufficient access to the inside of the tank as you will need to secure the tap from the inside. If you are unable to reach inside the tank you have the option of using a 1/2” Top Hat Grommet or 1/4″ Top Hat Grommet.