Hi this is my first post. We got a 1/2 acre pond about 2 years ago in NY, Sullivan County. We added some fish last year to fight with algae, but now we have problem with fresh water growth from the bottom up. I am thinking of puting the solar system to operate the airpump. Any suggestions would be greatly appreciated. The pond at the deepest part is 13 feet. My goal is to keep it swimmable and prevent the fish kill.