APEC Water FI-PHPLUS-QC, 10" High Purity PH+ Calcium Carbonate Filter | 1/4 Inch, Friction-Welded Leak-Free Design, Compatible with RO Systems, Raises Water PH

Perfect addition to my 5 stage RO system. Improves water taste.

My pets and I have been drinking RO water for the 20 years ..lt heloed whiten and get rid of the tear stains on my 3 little Bichon Frise at the time … I now have a new family of 8 standard poodles and 2 Bichon ,,,, dogs are healthy but I have always wanted to re-mineralize the water and re-incorporate the good minerals… dogs are 6 on averages and figured May as well get to it … thought it was going to be harder to do, which is why I procrastinate …WELL IT IS DONE … took all of 5 minutes to make my APEC. 5 filter system to a 6… dogs went thru a few days days of soft poo (Not diarrhea) but now they are all back to normal … I know this will be better for all, including me … Personally, and after the fact, all RO system should include the mineral filter … water tastes better and is much better for appliances like the coffee maker and fridge as water is less acidic! … the taste was good before but 100 times better now … dogs literally line up to drink when i add fresh water to their bowls …!!! THIS Apec filter is worth every Penny!

Great filter to get the water to an alkaline state with a high ph. Love it.

This filter comes with no packaging and the seals at the end are not the same as when they arrived with the original system. This does not look legit but more like a second hand item or refurbished. Not sure if that’s what it is. Given, that prior reviewers have expressed leaking issues. I do not feel confident installing this into my system. As I come to write this review, I see that other people have complained about the same issue. I will also attempt to return and see if I get something different like the original product or this subpar item. Everything about the system has been great up till now, but this is an issue that will make me want to go back and put a proper review on the entire system if we are to be given low quality replacement parts for its filters. I bought this to ensure that I had good quality water in my home, now I question what it is we’re actually drinking if they’re trying to provide such low quality product. What could it possibly cost to wrap this item in basic packaging, to seal the tips with some quality end tips like the original. Again, buyer beware would not recommend.

I have been using a whirlpool RO system for 4 years now, but didn’t realize I haven’t been enjoying it until I installed Apec’s remineralization in-line cartridge. Water is so smooth and easy to drink now. Ice cubes lost a little clarity but that’s fine. Everything tastes better, Coffee, pasta from cooking with the water, even water by itself. Installation is simple, install as your LAST stage before hitting the tap. I did not set this to feed my tank for fear of excess buildup in the bladder, keep in mind the line feeding your tank is a 2 way flow so I don’t think that won’t work well with this cartridge. Install after your post filter. Only reason I dropped 1 star down to 4 total is there is a pretty significant drop in delivered water pressure to the tap after installing. I knew this would happen ahead of installation, but it was pretty significant. I had to replace after about 5 or 6 months as my ice maker in my Kitchen Aid refrigerator stopped making ice for lack of pressure. Installed the replacement APEC remineralization and about a half hour later I heard the water feeding again to the ice maker. Overall, still worth it. For APEC, I would love to see what’s going on inside this filter. Have you considered a transparent filter housing? Just my curiosity kicking in. Would love to inside this thing as water is filtering through. Does the Calcite dissolve over time? Thanks APEC team for a better tasting RO experience.

Everything I needed was in the box. It was a direct replacement to the originals.

For reference, I'm using this with APEC's counter top unit (RO-CTOP). You have the option of either replacing the 4th stage carbon filter with this remineralizer module, in which case you don't need any extra tubing; otherwise, you can add it as a 5th stage AFTER the last carbon filter, in which case you'll need an extra length of tubing to connect the output of the carbon filter to the input of the remineralizer. Before installing the remineralizer, the RO unit was producing water with TDS of 12ppm (straight tap was 330ppm) with a pH of 6.4-6.6. After installing the remineralizer, TDS reading was 35-40ppm, with a pH of 7.0-7.2. This was using API aquarium water test kits (with the droppers). So, it definitely helped make the water neutral to slightly alkaline, giving it a much "smoother" feel to the water when drinking it. For kicks, I also tested for GH/KH and got 3-4 degrees hardness for both tests, which makes sense since this remineralizer should only be adding calcium. Interesting note: I had initially tried to be clever and installed this before the last carbon filter, hoping to producing mineralized water that was then carbon-filtered. This seemed to work (TDS went up to 35-40ppm), but the water still tested as acidic. I had a carbon block Culligan filter (that this RO unit replaced) and it never seemed to affect pH, so I'm not sure why this made a difference. Long story short, yes this mineralizer works, but you have to install it as the LAST stage in your system.

A must have for RO drinking water. It balances RO water just right so you can drink it every day without health issues.