Hayward Paralevel Startup Float Kit | 004760292100Paralevel is continually working behind the scenes to ensure that your pool or spa is at its ideal level. You can rest easy knowing that your pools water level is being monitored and adjusted automatically. If you ever need to make a manual adjustment Paralevels "posi click" adjustment makes it easy. One full turn equals 1 4" (6 mm) of water level adjustment.