APEC Water Systems 10" High Purity PH+ Calcium Carbonate Alkaline Filters (1/4 Inch)

It’s not SUPER easy to replace but in my mind it’s absolutely worth it. My husband who is no handy man puts them together and they work great without leaking. The peace of mind these give me that our water is clean and my family is healthy is wonderful. We also love the taste! No sulfur-smelling well water in our drinking water.

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.

Fácil de instalar buen producto gran servicio

The filter I got would not fit / install on my APEX RO PH90. The holes at the ends were too big and / or did not have the quick connect female connector as described on this web page. Not sure where to turn to next...

This taste very good

I use APEC Water Systems 10" High Purity PH+ Calcium Carbonate Alkaline Filters (1/4 Inch) a second time on my APEC ROES-50 system. Works well.

biggest plus is the tastes and the customer service. I received an unsealed filter thrown in a bag which did not inspire confidence in its purity and safety. I will be ordering directly from APEC from now on. Price is a slight negative since we need to change it out every 6 months judging from flavor and there are a lot cheaper options...but taste s most important to me so i will suffer through the cost...And APEC doesnt get their filters from China, so there's that as well..

I added this inline to the refrigerator, while leaving the line to the RO faucet as just RO. It did not add any discernable flavor to the water, but it did affect the feel of the water in your mouth. there was a noticeably softer feel than with just the RO water; the ice cubes are also less-clear than with pure RO, but they are easier to chew.While we love our RO system, I've noticed the negative effects of using water devoid of any minerals. The RO water has slowly eaten the top layer off of the inside of the plastic water container for our Kuerig coffee machine. I have also noticed craving water much more often since drinking RO water, which I think is my body asking for more minerals. As much as I enjoying drinking tasteless water, I feel that this filter is a necessity for any RO system. I feel more quenched after drinking it, and it does not add any undesirable flavor.Only downside is that I can't really fasten this to my mounted RO system, so it has to sit on the bottom of the cabinet.