PoolRx Sundance Spa Unit/Algaecide 400-1000 Gallon Spas
The PoolRx Sundance Spa Unit is continuously effective that is made up of a proprietary blend of minerals. Using a specially treated alloy cylinder, the minerals in the unit dissolve out of the cylinder that forms a steady residual throughout the spa for up to 6 months. The minerals in the spa unit are replenished every time they return through the cylinder so that the chlorine in the water can last as long as possible.
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