Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants UT OH! what did I do wrong?

After installing my aeration pump I have been waiting on the water temps to come up so I could spray the filamentous algae with copper sulfate (Cutrine plus). The pond had extensive shoreline coverage out to 6 feet and 1 very large mass about 30ft x 40ft in the shallow end. Well I mixed the spray and hit half the pond. 48 hours later all the sprayed area is clear(did it sink) and what is left floating is brown and grey looking. Things are VERY quite down at the pond. The fish are not eating the frogs aren�t croaking it is very still and I am worried! I have seen a few BG and a couple HBSB but noting is eating and activity is way down����..are they in shock? PS the pond is � AC and I used a half gallon of cutrine plus mixed in a 4 gallon backpack sprayer.