These flower stalks are between 20" and 24" tall, and the diameter of thick thread, and although it grows throughout the tank, the spiraling stalks are only produced on the sunniest end of the tank .
The flowers only slightly larger.
The shot below taken from above the surface.
Vals are fully aquatic and water current pollinated. I believe male and female flowers are segregated or matured at different time to prevent self fertilization.