Reddit reviews uxcell 71.8mm Fish Tank Water Level Sensor Liquid Vertical Plastic Floating Switch
We found 2 Reddit comments about uxcell 71.8mm Fish Tank Water Level Sensor Liquid Vertical Plastic Floating Switch. Here are the top ones, ranked by their Reddit score.
Product Name : Water Level Sensor;Model No. : ZP3208-P;Max Contact Rating : Max Contact Rating;10W : 10W;Max Switching Voltage : 100V DCMax Switching Current : 0.5A;Max Breakdown Voltage : 220V DC;Max Carry Current : 1.0A;Max Contact Resistance : 100mohmTemperature Rating : -10 ~ +60 C / 85 C;Float Ball Material : PP;Float Body Material : PP;Float Ball Size(Approx) : 15.3 x 23.5mm / 0.602" x 0.925"(L*D)Thread Dia(Approx) : 9.6mm / 0.378";Nut Dia(Approx) : 16.8mm / 0.661";Bottom Clip Dia(Approx) : 15mm / 0.591";Body Total Length(Approx) : 71.8mm / 2.8"Cable Length : 34cm / 13.4";Color : White, Black;Net Weight : 13g;Package Content : 1 x Water Level Sensor
Basically, I bought a float switch like this http://www.amazon.com/Aquarium-Water-Control-Plastic-Switch/dp/B005FDT02Q/ref=sr_1_6?ie=UTF8&qid=1406740109&sr=8-6&keywords=float+switch and clipped it to the rim of my tank so that it activates when the water gets higher than it should under normal operation.
There are a lot of different ways to wire it up so it shuts off your pump. Perhaps the simplest would be to connect the float switch to a relay that controls pump power. In my case, I have a custom built reef controller that I made using a Raspberry Pi. It does a whole bunch of stuff, including monitoring levels, temps, Ph and texting me when issues arise. It was relatively easy to wire the switch to the Pi and modify my program to shut off the pumps if overflow was detected. It also says "Main tank overflow detected, shutting down pumps" in a cool robot voice ;)
I'm interested in the same thing. I've only gone as far as to install one of these to get alerts on water level:
http://www.amazon.com/Aquarium-Water-Control-Plastic-Switch/dp/B005FDT02Q
I have a sump though so it's probably much easier to put one down there than on the top tank.