Bought this skimmer last Nov. And from the start it never worked. Always overflowed the cup. Sent it back and after 2 months they confirmed it was defective. So they returned it with a new pump. That pump did what you see in video. So they sent another, and it had a broke shaft . So they sent another and still it geysers. This skimmer is nearly a year old and not once been used in tank. Any suggestions




