hmm whatabout 2of these? would that be enough?

Turbelle® stream 6205

For aquariums from 800 to 3,000
litres (211 to 792 USgal.).
Flow rate: 5,000 to 22,000 l/h (1,320 to 5,811 USgal./h).
Energy consumption: max. 55 W.
Voltage / frequency: 100 – 240 V / 50 – 60 Hz.
Cable length: 5 m (196.8 in.).
Dimensions: diam. 90 mm (3.5 in.),
ejection: diam. 63 mm (2.48 in.).
Magnet Holder up to a glass
thickness of 25 mm (.98 in.).