Thanks Marianne, I am assuming you are talking about the NH2CL BLASTER on this page http://aquariumwaterfilters.com/RODI...ter_media.html
a question I use a Big progressive sediment filter (25 micron to 1micron) and then run through two carbon block. will the 10" NH2CL BLASTER replacment filters fit in a standard housing?
Steve
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