When the pump shuts off, the water drains back down the hose, making the pump turn back on?

  • Replace the check valve. 

Can I use my 5 series in Europe where the frequency is 50 Hz and not 60 Hz?

  • The frequency is not able to change, and the pump will not work. 

What can I use in my water to prevent it from going green?

  • Fountain algaecide. 

What is the difference between the 505715, 5-ASP and 505717, 5-ASP-LL?

  • Off and on levels for 505715:
    • Off level – range: 1" - 4"
    • On level – range: 6" - 9"

  • Off and on levels for 505717:
    • Off level – range: 0.5" - 1.5"
    • On level – range: 2" - 3"
Our Brand Promise

There’s a reason we’ve been the go-to pump for HVAC, Plumbing, Pool, and Hydroponics professionals for generations: experience. For 80 years, Little Giant® products have stood the test of time, pumping a steady flow of proven reliability in the most demanding applications.