IMO before you go and stock the hundred+ pounds of Tilapia recommended for FA control or start treating the pond chemically why don't we try to get an idea of why the fish kill happened in the first place. Is there a history of fish kills with this lake? Obviously we had severe heat and drought last summer but the fish kill occured early in the summer which, atlhough miserable, wasn't really the heart of the heat and drought. Do you remember what happened in the days or weeks leading up to the fish kill? Was there a period of cloudy days, major rain storm, green soupy looking water, any smells etc? Was it a huge fish kill with thousands of fish of varying sizes, was it just adult fish or was it primarily just one species? Last year was harsh on ponds and if that is the only fish kill that pond has ever had then maybe you could attribute the weather to what lead to the fish kill but if that pond has had other fish kills in the past I would think about addressing that first.
