I picked up a sprayer at Wallyworld yesterday that is really handy for cleaning between the DE grids without breaking everything down. If I can find the label I'll post a picture! Basically it is a 3 ft piece of pvc 1/2" pipe with a cap at one end and a hose attachment and small ball valve at the other. The cap has 4 holes drilled in it at right angles. I may cut the cap off and replace it with one that only has 3 holes so I don't squirt myself when I am trying to clean the grids!