Why spend money on a separate and expensive auto top-off (ATO) system when HYDROS can do the job for you? The HYDROS Auto Top-Off Kit includes everything you need to turn your HYDROS Control device into an ATO System. It is perfect for maintaining water levels in small aquariums or all-in-one tanks with low water fluctuation.
Accessory Highlights:
Automatically replenish aquarium water
Ideal for low fluctuation applications
Includes HYDROS DC Micro Pump & Triple Water Level Sensor
Powered, monitored, and controlled by a HYDROS Control and HYDROS App
Official CoralVue HYDROS Accessory
One (1) year warranty
 
Included in Package:
HYDROS Triple Water Level Sensor (plugs into Sense Port)
HYDROS DC MICRO Pump (plugs into Drive Port)
Hang-on Tubing Mount
Tubing (8.5mm OD – 6.5mm ID)
Siphon Break