My filter is a Waterford 21" sand filter and the manual says its max flow rate is 43.6GPM and the Max Operating Pressure is 50 PSI. It also states the turnover is 15,700 gal in 6 hours. The pump is a 1.5 hp Waterford and right on the cover of the manual it is matched to the filter I have. So the pump and filter are rated for one another, that's been established, but why is this not matched for my pool?

My solar panels are the kind that roll up in the winter and are right along side of the pool. I plan to put them up on some sort of rack this year, but I'm not sure if they will be at ground level or 3 feet up. They won't be on the roof. The two I have from last year are " Midwest Saturn Solar" and no where in the manual does it state max pressure, but it does say to keep the chlorine between 1-2 PPM. They have a lever built in the middle to adjust flow down one side of the mat and up the other. If the lever is in the open position, water just passes thru the pipe without being forced down the mat. I just purchased a sun heater brand from Leslies to add to them, but that manual doesn't state max pressure either.