Patent ID: 7641792

Claim:
A circulation system for a body of water in a tank having a floor and a wall arrangement extending upwardly therefrom to contain the body of water, said system including a flotation platform, an impeller, and a draft hose with a main body and a bottom inlet arrangement supported on the tank floor, said main body of said draft hose being flexible and extending from said flotation platform to said bottom inlet arrangement, said main body having an upper portion depending substantially vertically downwardly from the flotation platform and a lower portion extending substantially radially outwardly of said upper portion to the bottom inlet arrangement supported on the tank floor, said bottom inlet arrangement having a chamber with an outlet in fluid communication with the lower portion of the draft hose and an inlet substantially open about a substantially vertical axis, said impeller drawing water adjacent the tank floor substantially radially inwardly along said tank floor toward and from substantially 360 degrees about said vertical axis, into the inlet of said chamber, and up through the main body of the draft hose to the flotation platform.