ProOne7-Inch Gravity Water Filter Replacement G-Series 1-Pack - Universally Compatible with Gravity Water Filter Systems - NSF/ANSI Certified to Reduce Lead, Reduce Microplastics, & Total PFAS

Excellent item for our ProPur water purifier. Good value for the money. Easy installation. Very functional. Water cleaniness is definitely noticeable. Fits perfectly for ProPur. Filter speed is decent.

I was out of patience with Berkey. Their filters are constantly out of stock. I decided to try the ProOne filters, since it was time to replace the two filters in my Big Berkey. The ProOne removes fluoride, which is a pro or con depending on the individual.Pros: these filters are available; Berkey filters are always out of stock. The ProOne has NSF certification, which is the industry standard for water filter testing; Berkey does not, but claims it uses a third party lab for testing. ProOne filters are easier to install, less expensive, and seem sturdier than the Berkey black filters. There is no priming, no red dye test, and no leakage. I always worried the repeated filling and removal for cleaning might damage the Berkey filters, which seem fragile, but the Pro-1 filter seems more solidly attached to the base.Cons: The Pro1 filter is good for 1,200 gallons, so it’s life as advertised is half the advertised life of a Berkey filter. Of course, each filter is good for 1,400 gallons, so my system will filter a total of 2,800 gallons. That is a lot of water, and I’d replace the Berkey filters well before their advertised life since I’d worry about damage over time.Your choice. I like both filters, but at least the ProOne filters are available.

UPDATE 04/01/2025 - Supervisor Josh reached out and finally provided full refund via PayPal on 03/28/2025. Overall, a very disappointing experience but I’m glad I got my money back.I ordered G3 7" filters directly from the company's website, followed installation instructions, and water did not flow through more than a few drops. LITERALLY a few drops. Contacted customer support for assistance (spoke with Tyler) who recommended to try the installation instructions again using warm water. Tried again with same result. Called customer support several times only to have the automated message loop to the beginning without ever connecting to a customer service representative. After attempting phone contact numerous times, I finally reconnected with Tyler who informed me that filters were indeed defective and a refund would be issued, as receiving a replacement would likely net the same results.No refund received after several weeks, and made numerous attempts to contact customer support, to include numerous emails outlining the issue as well as using the customer support form on the website. Never received a response from any method I used. Sent a total of 11 emails and 4 customer support requests via the website and still no response. Contacted customer support via phone on 2 occasions afterward and spoke with Genie who informed me the refund would occur in 3 to 5 business days. Even received an email saying the refund had occurred, even though nothing was received back to the card I used for the purchase. Called again and Genie informed me that I was to receive store credit for another ProOne product from the web store, which I have no use for. I asked for her supervisor and she stated his name was 'Josh' and she attempted to patch me through to him but I only got his voice mail. Left a detailed message along with my order number and contact info and did not receive a response. Resent one of my emails requesting status of my refund and still no response. Called again today and left a message again for the supervisor (Josh Eskins?).Incredibly frustrated with the lack of customer support and the fact that I paid $102 for defective products that I can't use without getting a response or refund. Very dissappointed with ProOne considering I enjoyed using their products until this experience. Hopefully you won't have to go through the same experience.

This is my second time ordering this brand filter. First time i ordered the 9" and, while they filtered well (much faster than Berkey so I questioned their efficacy, but the water tasted good so...) the nut stripped super easily. On this set (the 7", because what's the point of the top two inches of the filter when they're hardly under the water, why not design one that is a large ball at the bottom?) these seem improved as the flow rate is 50% slower (think more thorough and closer to Berkey's rate) and the threads and nut didn't strip out this time as they seem sturdier. A good filter improved (or perhaps it's just the shorter size)

I have been buying these gravity fed filters for years, including the "off grid" ones that are currently unavailable. I have literally scooped lake water into my system using this brands filters and the water came out crystal clear, no smell. Water does not run through them slowly IF they are clean. I clean them and my buckets (I made my own system) monthly. Easy to install, The larger filters 7'-9' literally last a year. I used the water for drinking, cooking, for my pets. Always great water. With all the things they filter out including fluoride and pharmaceuticals, I'm happy to pay a higher price. These work GREAT! Worth every penny.

I ordered these as a replacement for my Big Berkey. It's been hard to find genuine Berkey filters and when you do they are ridiculously expensive. I researched alternatives and found testing numbers for these and several others compared including Berkey and they are very close with these better in some categories and slightly less in other.These installed easily in my Berkey tank and it was nice to not have to purge them. The fluoride and chemical filtering is part of the main filter which is also nice. There were reports that these were slow but i have not experienced that. I have a sight glass in my tank and it seems to fill at a normal pace. The water tastes just as good and i can still smell the difference from of source water. It seems to filter just as well. At half the cost of Berkey and with the security of knowing they are genuine these filters are a great buy and will be my choice as long as i can get them.