I live in North Georgia and have a small waterfall/pond; have had it for 10+ yrs. This is the first time I have seen these. There are a ton of teeny tiny little knat type bugs on top of the water. They are alive. I was wondering if anyone might know what they could be and what I can do to get rid of them. Wondering what is causing them to be there. It is in the 40-50'ss here with lows in the 20-30's. I was thinking of adding algaecide maybe to kill them