I got the brs granular with a filter sock, eventualy ill get a reactor and daisy chain it to my carbon reactor . or ill put carbon in bag and gfo in reactor.If other half finds out how much I spent I am dead lol.
GFO from BRS. You can get it in bulk and pay a lot less.
You can run carbon and GFO in the same reactor without using bags. The GFO finds its way to the top.
Plus, make sure you are using activate carbon.