I actually prefer these filters to ZeroWater filters for a number of reasons.1. In the tests I ran, it filters just as efficiently as the ZeroWater.2 filter. They are less expensive.3. It filters water much faster than the ZeroWater.4 filter. The FilterLogic version always allows water from the raw water tank to flow through the filter better than the ZeroWater filter. All too often, air bubbles form in the ZeroWater filter preventing water from the raw water tank from flowing down through the filter and I have to tap the filter myself or pierce the filter membrane with a knife. also work cheaper, faster and more reliably.
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