Pentair Pentek RFFE20-BB Big Blue Water Filter, 20-Inch, Whole House Radial Flow Iron Reduction Replacement Cartridge, 20" x 4.5", White

After 2 years of trying to get my water good. This finally did it. It really works. I started out with a water softener, which helped quite a bit , but the water still had an odor. so I put a solid carbon filter after the softener. That helped some, but the hot water still had an odor. The next change was to to replace the the sacrificial rod in the water heater with a powered titanium rod. I still had a slight odor so I put a chlorinator ahead of the softener. That put so much rust in the water that the softener couldn't remove it and the charcoal filter would saturate in a few days. Then I took out the chlorinator and put in a Big Blue filter with this cartridge. Now it has been in over 3 months, and it is still working. The charcoal filer is still clean after 3 months. It looks like the problem is finally solved.

Like others, I have the iSpring system. The filters from iSpring should last a year. They never really did a great job at removing iron. They were better than nothing, but I was still getting iron stains in my toilets. I had to use iron out every 2 weeks to remove the stains. I decided to give Pentair a try since their pool products are good. Well I put this filter (along with carbon and sediment) in my iSpring housings on Dec. 30th. It's now January 23 and no visible iron stains in the toilet. Definitely worth the slightly higher price and they fit the iSpring blue 20" housings with no issue.

My iron is all undissolved iron at 3ppm or more. By adding just a 1 micron sediment filter it drops to around 0.5ppm (1 ppm at most).I initially had a similar iSpring 20x4.5" Iron filter (similar price too). It lasted maybe 3 weeks 1000 gallons with at most being hit with 1 ppm of iron. I had both 1 micro filter and a carbon filter before it. It doesn't reduce iron at all after 3 weeks.I decided to give it one more shot and try Pentair Iron filter. I probably would have bought the Pentair first had I known it existed. I have had good experience with Pentair. I use Pentair components on my pool.Any way I have again a 1 Micron Filter before this Pentair (also 20x4.5"). But after some research watching videos I put the carbon filter after this iron filter. Some documents say this filter oxidizes the iron and then a post filter needs to pick it up. I'm not sure about that and if that applies to undissolved iron. Any way my Carbon filter is a 0.5 Micron and also made by Pentair. It cost almost as much as the iron filter.The water is perfect now. Pentair claims 80,000 gallons at 1ppm. Should last 2 years. We'll see but it's looking much better than the iSpring filters I installed first. I've been running for 6 weeks and 2000 gallons.I also top off the kitchen sink drinking spigot with a WaterDrop filter that does 0.01 Micron. This is also a GREAT filter and not expensive and should last 2 years (19,000 gallons). Even when the iSpring was falling to get the iron out the water out of the Waterdrop was still perfect.

Item is just what we expected it to be, and it seems to work well in our system. We have bought a couple of these.

I just finished installing a complete whole house water filtration system. I used only pentek filters and housings. I'm very happy with the performance of my system and how well it all went together. Here's a breakdown of the all the components I used in my system. I went to great length researching what works and found it wasn't easy going thru each pentek filter and it's function. The goal was to reduce some sediment, iron deposits from old iron pipes and remove any chemical taste. The water tastes great now and is crystal clear.Components:-Pentek Big Blue 20" Filter Housings-Housing Bracket for Big blue 10" and 20" filterFilters IN ORDER:1-Pentek DGD-2501-20 Spun Polypropylene Filter 20 micron dual stage to 1 micron.2-Pentek 155263, RFFE20-BB Radial Flow Iron Removing Filter3-Pentek RFCC-BB Carbon Filteryou can add another Filter after the Carbon for media if you want. Not necessary but is an option or run 2 sediment filters in beginning of the system.-Various copper pipes and PVC pipes to build the system. I highly recommend a bypass valve and a way to shut off the water to your filters if you need to change them without losing water pressure to the house.-I experienced nearly 0 PSI drop thru the 3 filters and no noticeable change in flow rate.

This filter has changed my life! We live in an area with crappy high iron water. I sometimes have difficulty washing whites because our water leaves iron stains on them. I had a different filter in, suggested by my "water guy," but it just didn't seem to do the job. I installed this Pentek 155263, RFFE20-BB Radial Flow Iron Reduction Cartridge and within MINUTES my water was clearer and cleaner! I can wash whites without spots, and the handmade soaps we use not longer leave sticky soap scum on the tubs and sinks. I have FINALLY gotten rid of the yellow stains left on the fiberglass tub. When I fill up the tub the water no longer has a yellow tinge. It's a bit expensive, but then so are clothes. This filter is the absolute best for my high iron well water!

I buy these about every six months and they do help to mitigate iron; I use it in front of my brine/resin filter. I was about to order another and saw the price has jumped to $100.66 from $76.03 back in December 2017, a 33% increase! I don't understand Amazon's pricing policies...prices change sometimes right before your eyes. It would be helpful to have two ways to rate purchases, by the product and how it performs along with how Amazon handles sales, returns, pricing etc. This filter is a five-star item but I lowered the overall rating because of the extreme price change. It forced me to look around and I found the same product at witerfilters dot net for about the same as I was paying in December. If you look around you'll find a coupon code that will reduce the price even more, as will a subscription. Again, the filter is fine, but Amazon???