Controlling Blanket Weed with Ultrasound
The presence of blanket weed in a pond or lake is unsightly, a hazard to fish and difficult to get rid of. To remove physically takes time and effort and the weed will regrow almost as fast as it is removed.
The PondTec ultrasound units are very efficient at killing blanket weed and if installed early in the year, before the weed has started to grow, then any growth is halted before it has a chance to become established. If a PondTec ultrasound unit is installed once the blanket weed has become well established, the ultrasound will kill the blanket weed,turning it brown. However, the dead weed will still have to be physically removed from the water and disposed of well away from the pool. Leaving dead weed on the edge of the pool means that as it rots, nutrient will return to the water, feeding further growth.
In the above photograph, taken a few weeks after a PondTec ultrasound unit was installed (foreground), the blanket weed has almost all been eliminated, what little remained can be seen on the jetty on the right of the picture.
If a pond or lake has a heavy growth of submerged vegetation, then ultrasound is a less effective option, as the plants may disrupt the ultrasound signal.