I swear that Gen-x media was not on there last week when I ordered my reactor. The Schuran coral sand was sold out. I just figured I would get ARM locally. It is $28 at Pet o' ! "Large grain schuran style" media is what is recommend for my reactor. In an email from Geosreef.com said:Sorry, I am just waiting to put the stuff in when it is ready to refill, I already have it here.
I've read that with that particular type of media said:That maybe true with the Shuran media. But with the Gen-X brand that has not been the case with those that are using it.