Product review (1 stars): Extremely poor product
These do not even remotely compare to the more expensive wick filters. These are simply paper laminated into an accordion-like structure. When you put them in the water, the squat down into a solid paper block which completely defeats the purpose. To top that off, the glue that these are assembled with is water soluble, i.e. these completely fall apart when wet. With the proper filters, we would easily go through about 9 gallons of water a day. With these, about 3 gallons. Absolutely do not buy these.