No. As Hagen states on their website:
"Flow Control: Simply shift the patented "Flow Adjustment Control" at the intake siphon. When the "Flow Adjustment Control" is at its greatest blockage, AquaClear's input and exhaust volumes are approximately a third of its maximum capacity."
So, at least flow, about 33gph, and 50-60 gph
G. A. Christian Bilou, Herpetologist
Founder/Director, Reptile Rescue Alberta
Past-President, Calgary Aquarium Society