[ame=http://www.amazon.com/gp/product/B000YIWT0M/ref=ox_sc_act_title_3?ie=UTF8&m=A28XQUUJU6SODD]Amazon.com: Filter Carbon - Pellets - 3 lb. Bag: PetCareRx[/ame] Is this the right carbon to use in a diy carbon filter? Or the wrong thing?