Swivel Cuff is not leak proof !

The Box clearly states "Leak- Proof Cuffs" (plural) - NOT SO - The swivel cuff if exposed to air will result in loss of suction and may result in pump to stop working. The swivel cuff must be attached to your vacuum head and remain in pool at all times. The stationary cuff on my set is sealed and leak-proof which I place in the skimmer box. The problem I have is when vacuuming the top pool step the swivel cuff is not completely submerged and sucks air thus impacting pool pump operation, so I do this step as the last step in vacuuming operation. I would not buy this product again, unless both ends were stationary cuffs.

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