Water pumping is more pleasurable than beneficial , It feels good and your penis look huge because of the magnification effect caused by the water , One advantage is you will not require as much suction from your pump because water volume, and you will get blisters no matter what , the trick is proper warming , most guys stick it in the cylinder and pump away , a big NO NO , warm it up , Hot wraps, Jelqing, stretching massaging then pump , you do that and you will not get blisters and your pump will last a few days :s :s