Can you tell us more about it? Is that 2 sensors? and a mount for the top of water line?
Here's a video about the
HydroFill:
[video=youtube;DdDBF5Tf-Us]http://www.youtube.com/watch?v=DdDBF5Tf-Us[/video]
The
HydroFill Controller uses water's conductive properties to complete a low-voltage circuit that causes a control relay to actuate and replenish aquarium water as it evaporates.
The sensors in the HydroFill ATO Controller use rare neodymium earth magnets for safe, stationary placement and simple out-of-the-box installation. Two chemically inert graphite electrodes are housed in each sensor for redundancy and consistent long-term performance in harsh marine environments. This departure from outdated float sensors offers greater accuracy and no-moving parts reliability.
The
HydroFill Pump is the industry's first low-voltage air lift pump designed specifically for auto top-off controllers. The HydroFill is an external positive displacement diaphragm pump that can push up to 15 gallons of water per hour to a height of five feet. The self-priming pump is equipped with a built-in check valve to safeguard against back siphoning and is a smart alternative to submersible pumps, since diaphragm pumps can run dry and are thermally protected against heat build-up.
