Okay, been a while since I posted. Got new pool put in and all WAS well. I got the Intelliflo pump and a DE filter. Here is my problem. I put the pump on low speed for circulation. From my understanding, on a DE filter you need to put the pump in high speed at first to coat the grids and then turn it down if you want. Well, my mechanical timer turns on and off for 12 hours of use. When it turns on, the pump resumes the last speed it was in. If I had it on low, I assume the grids aren't gonna get coated. So I have to leave the pump on high so it will resume on high in order to coat the grids. This totally defeats the purpose of the multi speed pump. Anybody got any ideas? This was only the 2nd Intelliflo he had sold (the other one was his) so he isn't sure what to do, but he is very accomodating. Do I need a control box? If so, which one is recommended? What should I do? He even offered to switch out the DE filter with a sand filter and put Zero Brite in it. He said that will get down a little closer to DE size, but not the same. Any help would be greatly appreciated.