Set of 4 Berkey Authentic Black Berkey Elements (BB9-2) and 4 Berkey PF-2 Fluoride and Arsenic Reduction Elements - Combo Pack

I think it does, and of course there is a cost to your decision; I use all of the cartridge holes. I have the Travel Berkey and the Royal. Even though I'm on city water, I don't trust the sources of the variety of places/states I go. Also, I'm a breeder and what my dogs drink is equally as important to me. I also have an artesian deep-well. 100% of the drinking water comes from the well, I do not use city water, and yes, I do use the white arsenic/flouride filters too. The water is crystal clean and it takes out all of the sulfur. Depending upon where you are getting your water geographically, you may get different results. I can easily get two years out of a set of these dual filters. The filters displace water, so the Royal only turns over 2 gallons at a time; less than what is advertised for this model, but that's OK with me. I make a 5-gallon bucket for the dogs availability at all times. Directions say to replace the white filters oftener than the black ones, but you don't have to. I recommend doing 2 things: 1) go to your county and get the information to have your water tested; costs about $20. They don't test for everything. 2) then go to your local pool company and tell them you want your pool water tested, which is usually filled by well water (deep or shallow/rock); if you say it's for a pool, they will give you a water test kit usually for free, because they think they can sell you their chemicals; they test for different stuff then the city. Compare the two, and you will get a general idea in how long you can get your filters to last, depending upon how clean your water is. TRICK: about once a year, every 6 months if you live in hot climate like FL and your unit is kept outside under a cover like my Royal is, you want to remove the black cartridges and scrub the outside of each one with a scrubby and reinsert. This cleans all of the invisible holes, and you can get an extra year of use out of the cartridges. Neat. If you think you have had them in the container too long, retest your water before you spend the money replacing these. Not getting around the expense, but I've seen too many bad reviews on trying to go cheaper, so I only use Berkey's products.

I've used and loved my Berkey for years. Recently I added 2 more Black Berkey filters and replaced the white ones. I had not done the red-dye test and decided to do it. My unit failed. :( I called Berkey and got great customer service on what to do to find the problem. First, make sure the wing-nuts are tight and not loosening up after being tightened. I wasn't sure what that meant, but 3 tightened and stayed tight. The 4th filter was obviously loose. I tightened it, but as I did, it loosened. I tried several times and realized that it was a defective wing-nut. I had an extra one, replaced it, and that was fine. The Berkey representative also recommended putting a glass under each filter to determine which one was the problem. I was skeptical about that but...I did it anyway. That was amazing! Three of the glasses were CRYSTAL CLEAR. The other one was red from the red dye. Now that I've isolated the problem, I can fix it.

I have had my Berkey for a few years and I love it. These replacement filters are easy to clean, prime, and install. Great tasting, clean water.

Upgraded my tired old double filters that were probably 6 years old and just not putting much water out any more despite frequent cleanings with a scouring pad. Now I'm rocking all 4 filters up top along with the flouride filters on the bottom. Take down and cleaning takes more time with 4 filters instead of two, but it's the top quality filter worth buying, and works great!

I've replaced the fluoride filters as these don't last long. They work I guess but hang inside the bottom container where your filtered water is; if you fill the top container full, then these fluoride filters will sit in your drinking water on a Big Berkey. An after thought in design and a lot of weight on the threads of the black filters when you turn the top container over when cleaning.The black filters should last for 5 years. After about 2 years the threads stripped on one of the filters (you can't see the damaged thread but when you tighten the nut it is obvious). I read you can put Teflon tape on the threads and the nut might hold. I did that for the last year and that worked. Washed out the top container today. You have to remove the filters to clean it. When replacing the filters another black filter thread stripped again. Now that two down.For the price you pay, this should not happen. Berkey sells blocking plugs that seals a hole where a filter was. No problem stripping these threads as they are made correctly! Why doesn't Berkey make their filters to this same quality; they certainly charge enough for the filters to make them correctly.Would like Berkey to replace these filters but there was no button on Amazon's page to contact the vendor so maybe Berkey will see this. I'm calling Berkey tomorrow but from blogs on the Internet it seems that will be a waste of time.

Price for replacement filters has gone up tremendously. Last purchase I made for filters and flouride set cost me $314.00 now same set is $419.00. I'm thinking a little price goughing going on. Come' on Berkey !!!!!

Had used the white filters with great tasting water coming through the spigot. Very nice.Felt the desire to upgrade to the black filters and the PF-2 Fluoride filters as I had moved to a different city.The new filters give a great tasting water and I feel very good about the quality of my water from the Berkey system.I highly recommend the Berkey water filter system with the black filters and the PF-2 Fluoride filters.