I have a problem and am hoping chlorine can cure it. Mosquito Larvae, and they evidently do not care that the Chlorine level is 6 ppm. I did add some this morning, brought it to 10ppm, and am running the filter at present. Is this common? We ARE having a horrendous problem with mosquitoes due to having 22 inches of rain in 24 hours and living in a swamp. I am hoping the chlorine will kill them, but if not what will?