3500
This pump has a maximum capacity of 3600 litres per hour at zero head.
It has a max head of 1.6 metres.
At 1.5 metre head it has a max capacity of 60 litres per hour
It is suitable for ponds up to 7000 litres (1540 galls)
Power consumption 53 watts
5500 This pump has a maximum capacity of 5520 litres per hour at zero head.
It has a max head of 2.5 metres.
At 2 metre head it has a max capacity of 1080 litres per hour
It is suitable for ponds up to 11000 litres (2400 galls).
Power consumption 75 watts.
8500 This pump has a maximum capacity of 8100 litres per hour at zero head.
It has a max head of 3.2 metres.
At 3 metre head it has a max capacity of 480 litres per hour
It is suitable for ponds up to 16000 litres (3500 galls).
Power consumption 110 watts.