CoralVue HYDROS Auto Top-Off (ATO) Kit

CoralVue HYDROS Auto Top-Off (ATO) Kit Why purchase a separate and expensive auto top-off system when HYDROS can do the job for you? The HYDROS Auto Top-Off Kit comes with everything you need to use your HYDROS device (like the Control 2 or Control 4) as an ATO system.  The HYDROS Auto Top-Off Kit Includes: HYDROS Water Level Sensor (plugs into HYDROS Sense Port) HYDROS DC Micro Pump (plugs into HYDROS Drive Port) Hang-On Tubing Mount Tubing (8.5mm OD - 6.5mm ID) Siphon Break HYDROS Water Level Sensor: An Easy and Accurate Way to Monitor Your Water Level! The HYDROS Water Level Sensor contains no moving parts that can fail. It’s extremely tiny: it’s a little over a half-inch thick with a circumference the size of a US penny. The optical eye is magnetically coupled with the magnet side measuring only ¼” thick. It can be mounted to most clear, tinted, or painted surfaces up to ½” thick. The sensor operates in the daytime or complete darkness so it’s safe for use hidden insi