bcarlos;4610192; said:I use PVC for my ray tank, super easy. Just cut the pvc to the height of the water level and drill plenty of holes in it. I drilled two holes large enough to fit the nipple of a suction cup, and use these to fasten them to the inside of the tank.
For plecs, though, you don't need to use this method. They are sensitive enough to know when they're being burned. Never had an issue with any of mine being burnt.
+1
Mine do it all the time and I've never had one get burnt.