TunzeComline Pump 0900

I have used these pumps for a while now and the pumps have performed poorly. The pumps will seize for no apparent reason. Pull the pump from the system, disassemble and examine. Nothing looks out of order (such as the common calcium build-up in a reef system). Re-assemble the pump and the pump appears to work. Come back a couple of days later and I find it seized again. Not a reliable product.