Backwash:  When pressure goes up 10 psi
                  typically every 4 to 6 weeks

Cleaning: End of season, clean grids with ProTeam Filter Magic,

               lube all o-rings when re-assembling the filter

Replace:   After each backwash, add new D.E.  

Cartridge Filters

Cleaning:  Disassemble filter typically monthly,

                clean cartridge(s) with ProTeam Filter Magic,
                rinse thoroughly and allow to dry
                before putting cartridge back in the canister. 
 

Replace:  Cartridge every 1 to 2 years.

Backwash:  When pressure goes up 10 psi
                  typically every 1-2 weeks

Cleaning:  Use 6 oz. ProTeam Filter Magic once a month
                while backwashing.

Replace:   Change the sand at least every 3 years