
I put this activated carbon block in my RODI unit and used it for about 2 months before my water tested positive for chlorine. I used to be able to use individual blocks for almost a year. I don't know if I broke or not but I don't do that many RODIs and was very disappointed with the durability of the carbon block. I even removed the filter housing to make sure I had a good seal; I assumed it was user error. It's not, turns out it's just poor quality carbon. Edit: I contacted Aquaticlife and they helped me a lot. They are sending a replacement and as soon as I receive it I will come back to this review. As it stands I have upgraded it from 1 star to 3 stars due to the excellent customer service. If the replacement block works properly, further processing is done.

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