Use the Top-Off System the Pros use! SpectraPure's Liquid-Level Controller is THE MOST RELIABLE, Period.

The SpectraPure LLC Sensor uses air pressure to monitor your sump (or tank) water level.

Ask any professional aquarium maintenance technician or a hobbyist who's learned the hard way (you can easily spot them; they usually have their pant legs rolled up and their feet are all "pruny"): "What's the best Automatic Top-Off System? You get two answers: "The one that ALWAYS works" and "SpectraPure"

What makes SpectraPure so great? In short, using air pressure to control the water level means there are no floats or other mechanical sensors which ALWAYS FAIL. You can also buy our complete auto top-off kit here.

Installation Procedure:

•  Plug your pump into the SpectraPure Sensor (our recommended pump is the QuietOne 400)
• Mount the clear sensor tube in your sump so that about 1" of the open end of the tube is below the running water line of your sump
• Place the QuietOne 400 into a vessel of fresh top-off water
• Plug in the SpectraPure sensor unit.
• Adjust the sensor up or down to fine-tune

If you have questions or would like to place a custom order, Call Nemo Marine Systems at 408.238.8240 (8:00 am to 6:00 pm Pacific Time, 7 days a week!). You can email us anytime.