Neptune Systems Optical Level Sensor w/ Magnetic Mount Subset_12x12 and accommodate up to three

and accommodate up to three betta fish in one space

20 Gallon ReptoHabitat

black silicone

Model  XR30 G6 BLUE Dimensions L x W x H 11

Easy to install and operate

Neptune Systems Optical Level Sensor w/ Magnetic Mount Subset_12x12 and accommodate up to threeProduct Description FMM FLUID MONITORING MODULE IT DOES SO MUCH! This sensor plugs into your FMM and, using reflected infrared light, will signal your Apex when it changes state from being wet to dry or dry to wet. This sensor can be used for constructing your own ATO (auto top off), as a high level warning sensor in your sump, water storage level sensor, and much more. The sensors can be mounted into custom brackets or through a hole in a vessel.