Aquatic LifeDI Color Changing Mixed Bed Resin Cartridge, Aquarium, Hydroponics

I have purchased a bunch of these over the years and they consistent bring my TDS down to 0 for my RODI water supply. Make sure to double check the caps as they sometimes come delivered untightened and can leak after installation

I bought this to add DI to an existing RO (hydrologic stealth ro 300). it easily keeps up with the flow, my RO is reducing my incoming water from 400 ppm to under 10 and the di filter is reducing it further to zero. Not 1, not 0.1, Zero. it works great. I got over 100 gallons through my first filter, and im using it to feed a 20 gallon tank that i can store for car wash water. one issue i had was that my water pressure in my house was not consistent and the system was backfeeding through the DI filter and using it prematurely. I added a check valve to combat this. Really its only an issue for me because i have a pressurized tank on my output side. The filters are also refillable if you would like to reduce costs.

I like the ease of the RO Buddy unit. No messy wet used resin to dump, no filling and packing resin or no cartridge to rinse. Simply exchange a couple of connections and install the water lines.

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TDS 0!!Haven't had to refill resin in over a month.We can tell the difference even after the ROSuggestions for those comments I read.You need a RO system before this cartridge.It is a finisher not for full filtering.I also have a water softener on whole house.For the comments on difficulty opening and resealing cartridge.Hard to open first time. They fill it with resin rather full.Before putting top back on I suggest you use a bit of gasket lube (food grade) on seal and threads.You need to tighten well or it will leak. I was able to open and close easily with no leaks.Might want to put a elbow on supply side (bottom) to prevent kinking of line.I would recommend to all.

Simple install, just add a 1/4” T and a valve to RO water out line and clip this thing on. Take a little bit of time to make 5 gallons for spot free carwash. I use a battery power pressure washer gun to wash down and final rinse.

Used this filter on the the rodi water for my fishes water changes works just as intended happy with the product

Overall, this is a good product. It lost half a star for having no instructions, half a star for the first unit dying unusually quickly, and a full star for being incorrectly described in the listing. Beyond these issues, though, it works well.First, the units I received were not green, which is important because the unit's coloration is how you know if it is still good or needs replaced. The units I received were both blue/black, as you can see in the photos I uploaded to Amazon. The listing, when I bought the items, did not say anything about there being different color models; it only discussed a green model, and I wanted green anyway for aesthetic reasons. The only reason I discovered blue/black was a second model was by going to the company's site and looking through several documents there. The listing should accurately describe what you'll receive. Hopefully, by the time you read this, it will be updated.Second, the unit came with no instructions. It didn't say which end the water should enter and which end the purified water exits. The answer, by the way, is water enters the bottom and exits the top, which you can see from the documents on the company's website. The unit also has a particular kind of tube seal that is not obvious: there are white baskets sitting in a hole, you push the basket down and shove the tubing into the hole, and then you pull the basket part up and clip a blue U-shaped clip on. That part was easy to figure out.How to remove the stoppers that are in the basket when the unit arrives (and how to get the tubing back out of the basket) was not obvious. If you just pull and pull and pull on the stoppers, nothing will happen. If, however, you simply push the basket down and then, while holding it down, pull the stopper out, it's really easy to remove them. Same with tubing: push the basket down, pull up on the tubing, and voila, done.Finally, my unit turned brown (the color that the black/blue ones turn when dead) exceptionally fast. Within a few hours of use, I had a mostly brown unit. You can see that from the other image I uploaded. Amazon sent me a new unit, though, which was amazing (as Amazon customer service always is).Beyond that, I love this unit. It's a great price and makes the amount of water I expected. My water hardness is way down from using this unit, and my fish tank is very happy. It was easy to install and put together with the main Aquatic Life unit. The few questions I had were easy to answer by going to the company's website and finding a manual (which should be included with every order, but wasn't for either of mine).One last word of warning: be sure that you don't put this somewhere that has high pressure. Or, if you do, make sure you buy tubing that can handle it. I put mine in the wrong place on a solar water heater and the pressure was too high: it blew a hole in the tubing I bought and leaked quite a bit. However, I just changed the tubing, reduced the pressure, and it has worked fine since.Overall, I recommend this unit to others. Just be advised that you might not get a green unit, and go straight to the company's website for instructions if you need them. Otherwise, this unit works well for me.