This reactor would probably not be the best reactor to run bio pellets. It is mainly built for GFO and Carbon.
If you are looking for a biopellet reactor, here are some great suggestions for a tank your size...
http://www.coralvue.com/reef-octopus-br110-biopellet-reactor
http://www.coralvue.com/biochurn-120int-biopellet-reactor