Available models:
PFE1 - 45gph. For aquariums up to 15 gallons.
PFE3 - 80gph. For aquariums up to 25 gallons.
PFE4 - 120gph. For aquariums up to 40 gallons.
PFE6 - 170gph. For aquariums up to 55 gallons.
PFE9 - 240gph. For aquariums up to 80 gallons.