I have those little black almond shaped water bugs swimming in my pool. lso have the ones that fly and look like they have 4 long legs. Chemical levels are perfect. water is clear and warming up to about 85. did just have a very heavy rain and had to drain about 2 inches of water and clean leaves out. Any idea how I can get rid of these guys. some actually do bite. I thought about shocking the pool just to get the chlorine levels high which might make them want to leave. Any help would be great!