
Easy/quick installation. Very simple, compact design. It therefore does not require a hydraulic tank. The Os filter is expensive ($90) but its construction is not worth it. There are no leaking cans that cannot be closed. After several hours of trying, I threw away the old block and bought this one. The TDS pen shows a drop in dissolved solids from 101 ppm to 8 ppm. (Internal meter reads 3ppm) Pretty good. Tip: Make the 1/4" baseline as short as possible. I was in a hurry and skipped this step. Solids accumulate at the bottom of the line, causing the TDS to peak at 50+ and then drops off after power on.

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