Hey fellow Reefers,
Just purchased a Neptune Apex system and bought the leak detection module. The attached picture shows the solid sensor. Following installation and testing it with a damp cloth which showed the sensor to be working correctly, I placed it on the base of my concrete floor below my tank. Unfortunately the metals used to construct these sensors are so delicate that even a cold, dry concrete floor can cause this corrosion. The corrosion has now caused the sensor to be unusable. Not good for £35 sensor. Hoping to get a replacement free from Neptune. Just thought I would put this thread on here for any thoughts, reviews.