I ordered a pair of these and they came in very odd packaging. Following the flushing instructions, I tested the water coming out of the filter and it had the same amount of dissolved solids as the water coming straight from the faucet. I then ran some water through a 3 stage filter and checked it for 0 dissolved solids. At this point I ran this water through a Brita filter and it came out 60 degrees higher. There was more stuff in the water after the Brita filter I got.
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