Can someone help me out with this. We treated a pond with 4 ounces or sonar A.S. The pond is calculated at 2 to 2 1/2 acre feet. It has been 1 month and the Lily's are not looking good , the rush is turning white but EWM is still looking pretty healthy. There is a lot of it brown but no white and when I pull out a hand full it is still really green underneath. No water has exited the pond and there has been very little rain. We are debating putting another 4 once in.