SENSTREE DIGITEN Automatic Aquarium Top Off System with Dual-Float Control and Pump

The SENSTREE DIGITEN automatic aquarium top off system maintains sump water levels by activating its included pump when water falls below the minimum level and stopping at the maximum.

• Dual-float relay control — starts and stops the pump at set water levels, with a second float as backup.
• Adjustable holder fits aquarium walls up to 5/8 inch (16 mm) thick — helps position the sensors at different water levels.
• Water-level range of 0–6.7 inches (0–17 cm) from the top of the sump — accommodates a range of sump setups.
• Includes the pump and an ETL-listed power adapter — provides the key powered components for setup.
• 12-month warranty — includes a stated warranty period for the system.

Evaporation can lower water in an aquarium sump and make regular top-ups part of tank care. This automatic top off system is made for aquariums, fish tanks, and sumps, including sumps with substantial evaporation. Its sensor-controlled pump automatically adds water as needed, helping keep the sump water level stable without requiring manual refilling each time the level drops.

How does the SENSTREE DIGITEN system control the water level?

The dual-float relay switches the pump on when water drops below the minimum level and switches it off when the water reaches the maximum. A second float is available as a backup if the first float fails, providing an additional level of overfill protection. The water-level control has no moving parts that can fail.

• Automatic pump activation and shutoff are controlled by the water level.
• The holder’s adjustable bracket allows different sensor positions.

Will the holder fit my aquarium or sump?

The holder fits aquarium walls up to 5/8 inch (16 mm) thick, and the system’s water-level range is 0–6.7 inches (0–17 cm) from the top of the sump. The holder is made from PC material and is designed to help prevent movement. Compare your aquarium wall thickness and sump water-level range with these measurements when choosing a position.

• Suitable for aquariums, fish tanks, and sumps.
• The adjustable holder supports positioning for different water levels.

What is included, and how should the water line be set up?

The complete kit includes a pump and an ETL-listed power adapter, along with the parts needed for installation. Installation and maintenance are designed to be straightforward. A siphon break is an optional installation part, but it must be installed at the end of the water supply pipe if that pipe end is left in water, to prevent siphoning after the pump shuts off.

• For the recommended arrangement, keep the display tank water level higher than the reservoir.
• Do not leave the water supply pipe end submerged unless the siphon break is installed.

The SENSTREE DIGITEN system suits aquarium owners who want automatic top-offs for a tank or sump, particularly where evaporation is substantial. Its included pump, dual-float level control, adjustable holder, and 12-month warranty make it a specified complete-kit option for maintaining sump water levels.