PoolRX Black PoolRx+ Spa Unit 20-30K gal - 4 PACK | 331067 PDR2 This assembly is great because

This assembly is great because it includes everything needed to replace the entire filter canister including the canister top (blue)

it ensures a long-lasting

Jandy CS Series Cartridge Filters O-Ring Set || R0466300

It’s also resistant to oils

-Hoses NOT included

PoolRX Black PoolRx+ Spa Unit 20-30K gal - 4 PACK | 331067 PDR2 This assembly is great becausePoolRx+ Black contains a proprietary blend of minerals that continuously and effectively eliminate algae. The specially treated alloy cylinder is packed with PoolRx+ granular formulation. These minerals immediately dissolve out of the cylinder and form a stable residual throughout the pool water for up to 6 months. The minerals eliminate the algae while freeing up low levels of chlorine to be more active and productive in the water. During the pools