The Pool Frog 01126112 Above Ground Pool Mineral Reservoir Cartridge makes pool start-up much easier. This new feature added to the Pool Frog mineral technology will give your pool an extra boost of shine without all the extra hassle. This Pool Frog Mineral Reservoir is made for in-ground pools and should be replaced before every season to make sure your pool is sparkling clean, so you can spend more time enjoying your pool and less time maintaining it. The Pool Frog Mineral Reservoir fits inside the Pool Frog Series 5400 or 5600 and Prevail Series 5790 Cyclers. Your Pool Frog Mineral Reservoir should be changed at the beginning of every season, and for best results, don't use one for more than six consecutive months. The Pool Frog Mineral Reservoir saves time and money since there is no daily dosing of minerals or chlorine to do manually.

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