New to the forum. We have an 18' round intex ultra frame. I've added a skimmer and we also have a 2800 GPH sand filter and an SWG with the E.C.O. being delivered tomorrow. Our old sand filter had some issues this year so we're replacing it and went ahead and replaced the SWG as well. Stumbled upon this site looking for ideas to hard plumb the new systems. Thanks for the add!