Are there any simple leak detectors that will turn off a return pump for when away from home? Most I found are just alarms. Maybe similar to this but as a leak sensor not optical :
Thanks
Smart Level Security
Prevent overflows or equipment from running dry! Using a tiny optical sensor, AutoAqua's Smart Level Sensor will cut power to the outlet when the sensor detects a change in water level. The plug & play design requires no difficult programming and the magnetic attachment makes placement and...
www.bulkreefsupply.com
Thanks