lol i know the blue life stuff works. i used it many time before. i take the easy aggressive route. i have taken the gfo (brs) off line since i to lazy to replace it. once i get my level to 0 ill probably buy a bucket of rowaphos and use that.
And for others, are you just throwing the sock in a high flow area in the sump or are you placing the entire bag in a reactor. I was considering both options, but the sock and dropping it in the sump would be less work.