Product review (2 stars): Disappointed
The instructions say it needs to be soaked in water for 15 minutes before use and to run 2 or 3 gallons of water thru it before use.  It also says that if you don't use it for 4 days, you should run 2 or 3 gallons thru it before use.  The OEM filters do not require this.  I will not buy these again.