Nature2 W28125 Replacement Mineral Cartridge, for G25 Pool Sanitizers

We built our pool 5 years ago, and installed this "extra" filter during construction. We replace the cartridge every spring, and our pool maintenance is easy. We also like the fact that we can keep our chlorine at 1/2 the normal level (0.5 ppm) and still maintain clear, clean pool water. Our pool water feels like bath water, no chlorine smell or itchy skin. This filter costs $130 in local pool stores, so this price online is VERY reasonable! And it saves us money in the long run because we purchase less chlorine.

Helps keep my pool water crystal clear. Saved $100 by buying from this site as opposed to my local dealer.

Fits any Nature 2 25-45,000 gallon pool and cartridge holder. Odd that the price for the 45 is cheaper than the price for the 35, so even though my pool is about 30k gallons I went and got the higher rated model. They are all the same exterior dimensions and fit the Nature2 housing. Have used for the previous 7 years and never any issues with pool water, and I do keep the chlorine level low.

Great product really cuts down on my chlorine use and other chemical use One year I got cheap and didn’t purchase it, and I ended up spending so much in chlorine and algicide. It was crazy not to mention the fact that it was a constant headache trying to keep the pool clear. This product keeps the pool nice and crystal clear and sparkly would not go without it again.

Item number was 1 digit off. Ordered 45, received 46. Fit fine and works with filter system.