This is the circulation pump you've always wanted: A light-weight that is small, but performs really much.

The Power Head Circulation Pump HX-2500 is pumping in systems of automatical irrigation for hours and hours and hours ... and keeps the nutritions from settle out on the ground of the water container, so they can reach the roots of the plants continiously.
The normal power of the HX-2500 is 600 litres per hour into an altitude of 1 metre. This can be maximized to 1000 litres per hour into 1.6 metres.
And the circulation pump itself only weights 600 g and is only 11 x 9.5 x 12 cm small. The diameter of the tube fixture is 14,5 cm. Strong vakuuam cups adhere the Power Head HX-2500 to the water container without any problems. Several spare fxtures modify the pump for your special water bin.
... pumping, pumping, pumping ... You can't give to much "work" to this absolutely solid Power Head Circulation Pump, it won't be easily fed up. Even running dry for a short won't cause damage to the HX-2500.

Technical Information:
220V / 50 Hz
22 Watt
Calibre: 14.5
Weight: 600 g
Dimensions: 11 x 9.5 x 12 cm