I have a low flow problem. I have a Hayward Super II pump I have had for years. Over that time I have replaced the motor twice. I currently have an EB796 which says it is a 1.5 HP but I can't see the servive factor. I also have an impeller for a 1.5 HP motor and a 60 square foot Hayward DE filter all with 2 inch pluming.  The problem is because I don't understand full rated vs up rated calculations, I may not have the HP I orginally had. The flow is enough to circulate the pool water but not as it used to.I think a total HP of 2 may solve my problem but I am not sure. Can anyone confirm my assumption and suggest  what motor I should get. Or any other comments would be appreciated.