1.25 acres, avg dept 5ft, no desirable vegetation, secchi dept 3-4 ft, alkalinity 120ish, moderate hardness, ph 6.7, and no infow/ outflow. Treated with diquat copper back in July for sago pondweed and bladderwort took over 2 months later. Haven't treated again yet but have dyed it to slow it down a little.