I know this propably gets asked a lot but after searching and reading I'm still confused.

I just killed off all of the duckweed and watermeal with fluridone in my 3/4 acre pond. Just after it was killed off i notice there are clumps of algea floating on top. Besides some grass carp the pond is basically fishsless but I do plan on stocking some fish this fall catfish included.

Should I use copper sulfate to treat the algea? Should I go the tilapia route? And how much? Will the tilapia winter over?

Thanks
Adam