Do they mention how many gallons of treated water to expect based on your TDS ?
While searching for the answer to your question, I started to realize that I should have done more homework before jumping in. Although the product description doesn’t say it, many of the questions and answers on Amazon indicate that this device is really intended to be used with a reverse osmosis unit, which brings the TDS down prior to deionizing. If you don’t do this, and your tap water has high TDS, you will burn through the DI cartridges very quickly. Here’s a question and answer from the seller, along these lines:
“Q: If my water is at 175ppm will this make 0 TDS water?
A: It will bring it to zero, but it's not going to last very long with that high of TDS. The DI carts usually get you about 300gph of purified water coming off an RO machine that brings TDS down to about 3-20 TDS.”
Since I know nothing about RO systems, except that they’re going to add cost and complexity to this setup, I cancelled my order (hopefully in time), so I can research this further.
Darn. Really wanted to believe this was a cheap spot-free system, but I guess there’s no such thing as a free lunch.
