the media should always be rinsed before adding it to your system. the dust created during the shipping process will be released into the system, absorb small amounts of phosphates, settle into the tank, and as the phosphate level lowers, they will be released back into the system from the dust particles.
and rowa also say's not to rinse--go figure?? I have noticed it does last allot longer when you don't rinse it.The dust does no harm to fish or coral also.I use to rinse it all the time tell I read the rowa instructions.The filter pads in the reactor seem to catch most of the dust IMO.I presently use BRS's high capacity,about as close to rowa's phos ban but allot cheaper.I have not been rinseing it for almost a year and have seen no negative response from doing so.Also note that I stated the instructions I have read LOL.Not saying I'm right Just my .02 tho
Last edited by binford4000; 01-28-2012 at 02:27 AM.