AquaForte O-Plus Vario Series The variable speed version of the popular O-Plus series! Advantages Adjustable flow from 30% to 100% with external controller Specially designed for underwater applications The controller can start/stop the pump Automatic power-off protection when running dry Technical specs Type Art. nr. Watt MAX.LTR/H Max. Head 6500LV RD725 50 6500 4 mtr. 10000LV RD727 85 10000 5 mtr.