Hello all, bought a house with a pool had to move the filter to accommodate a home addition, the pool co installed filter lines 180 out. The plumbing has been corrected but needless to say I have sand in all return lines and Polaris line. Its not pouring out but it is a steady fan on the floor in the mornings. And when I try to use my Polaris the inline filter clogs with sand after about 1min run time. Ive been vacuuming it out daily but would like to get it out the lines in one shot. Was thinking about jamming a garden hose down there to stir it up and get it out. Any ideas, I am approaching the pool co to get some or all of my money back, but really don't want their guys working on the fix. Stats pool is 16x32, plumbed with 1.5 PVC and a sand filter. Plumbing is kind of indirect due to the house addition.