Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants Sonar application time?

Sonar is a systemic herbicide and requires that the plant be growing to work. That means it needs to be applied before the water cools. It is also a selective herbicide and does not kill plankton so it is less likely to cause a fish kill. Always read the label (see below). IIRC 60 F water is to low.

http://plants.ifas.ufl.edu/guide/sonaras_label.pdf


Here is a thread on DW/WM with good info.


http://www.pondboss.com/forums/ubbthread...true#Post106127 algae effects


http://www.pondboss.com/forums/ubbthread...ite_id=1#import application example


http://www.pondboss.com/forums/ubbthread...true#Post105725 WM/DW threads