My return pump has chugged along for 1,815 days in a row, running 23.5 hours a day. Every night for about 30 minutes, the return pump is turned off while I feed the tank, then restarted once they've had their feasting period. The Little Giant - OPGW-46, tired and wailing: Over the past month, it didn't always want to restart. I tried spraying some silicone lubricant on the shaft, and chipped ...