Pentair #709 9" Rainbow Algae Brush, SS Bristle | R111626 C4317 AquaChek TruTest Test Strips

AquaChek TruTest Test Strips

but please measure your existing cartridge before ordering to confirm fit in your specific spa model

which can damage the media and shorten cartridge life

don't guess

measure your existing cartridge's length and outer diameter against the specs above — 12 1/2" length and 5 3/16" OD are the key fit dimensions for the 5CH-502

Pentair #709 9" Rainbow Algae Brush, SS Bristle | R111626 C4317 AquaChek TruTest Test StripsPentair R111626 Rainbow Algae Brush 9" Wide Features and Benefits: Algae brush with stainless steel bristles Perfect for removing tough algae on plaster surfaces Snap adapt handle fits most poles