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Frog Mineral System- 5051 Series
Sits inside the mineral reservoir and dispenses low levels of chlorine and will last approximately two weeks.
Made for above-ground and inground pools.
Note: This 5051 model can now be used with the Frog Series 5100, 5200, 5400, 5600, 6100 and Prevail Series 5770, 5771, 5790.