I wasn't happy with the amount of daily skimmate I was getting out of my skimmer. A Mag Drive 5 pump powers the skimmer through a 1/2" ID tubing. The inlet for the skimmer accepts 3/4" ID hose so I switched out the 1/2" for a 3/4" and boy did I notice a difference. Almost immediately the skimmer started producing twice as much bubbles and foam as before. I'm glad I changed the tubing. The wider the tubing the easier the pump can shot flow through.