Outstanding! By Erik on 2/12/2010
Erik would recommend this product to a friend
One of the best purchases I have made for my reef. Makes life so much easier verses manual top offs and it is very reliable. The "eye" is accurate and it even has a float switch as a safety that will shut off the unit and activate a rather loud buzzer. I use a five gallon bucket of RODI water as a reservoir and it works great. If the bucket runs dry the pump will auto shut off after a few minutes to keep from burning itself up and again sound the alarm. I used the magnetic brackets to mount the eye and the "shut off" float a few inches higher up separately in my sump. One of the brackets is setup to hold both the sensor and float if that would suite your setup. The magnets are quite strong so you can be confident the "eye" isn't going to slide anywhere and change your sump level. One caution...I had an issue with it over filling my sump and setting off the buzzer the first few days. Couldn't figure out what was going on at first and then it hit me...and I felt foolish. This may seem like common sense but mind where you place the top off tube. I had tucked it down into the water next to my return pump to keep splashing noise down. Well...next to a full 5 gallon bucket full of RO water...once the pump started the siphon even after the pump cut off gravity continued to empty the bucket into my sump. So I shook my head and placed the tube a few inches from the top of the sump tank...above the water level in the bucket...problem solved.