Hayward Matrix Impeller for All Models - SPX1591F Hayward ED2 Parts and act as a barrier

and act as a barrier against leaves and debris

Polaris All-Purpose Bag

So you get the heating during the day (the solar part of the equation) and you get the thermal protection at night (the blanket part of the equation)

OnCommand (LITONCOM10C)

the chemical feeder must be installed in a manner that will not permit concentrated chemical fumes or solutions to enter the heat exchanger

Hayward Matrix Impeller for All Models - SPX1591F Hayward ED2 Parts and act as a barrierProduct Description Hayward Matrix Replacement Impeller for ALL Models. Hayward Item Code: SPX1591F Features Genuine Hayward Matrix Impeller. Compatible with ALL Hayward Matrix Pumps: SP5610, SP5610CP, SP5610ET, SP5615, SP5615CP, SP5615ET, SP5615TR, SP56152, SP56152CP, SP56152ET, and SP56152ETSA.