The AquaFX Vertical Mount Float Switch is a versatile component for automating water level control in your saltwater aquarium system. It is designed to be installed vertically within a sump, reservoir, or auto top-off container to accurately detect and maintain desired water levels, preventing overflows or pumps from running dry. This switch serves as a reliable sensor for custom DIY projects, providing a simple yet effective mechanism for managing water additions or triggering alerts.

This float switch features a clever reversible float design that allows it to function in either normally-open or normally-closed configurations. By simply removing the retaining clip and flipping the float upside down, you can change its operational mode to suit the specific needs of your system, whether it's activating a pump when the water is low or shutting one off when it's high. For safe and long-term operation, it is essential that this float switch be used in conjunction with a relay to handle the electrical load of pumps or other high-power devices.

This component is ideal for the hands-on reefing hobbyist who is building or upgrading a custom automation system. Whether you are creating a new auto top-off (ATO) system, implementing an emergency shut-off for your protein skimmer, or managing water levels in a dosing container, this float switch provides the reliability and flexibility needed. Its simple installation and adaptable design make it a fundamental building block for ensuring stability and safety in your reef aquarium.