My first set of frog eggs have now turned into tadpoles right during the time that the string algae has started to rampage my pond. Usually not a big deal but when I go to pull some out, especially in the small bog area that the first set of eggs was laid in, I can't help but to pull out tons of tadpoles so I drop the algae right back in. Do I ignore it or what? I don't even think the tadpoles can swim through the algae it is so thick. The string algae is usually gone before the toads lay eggs and they lay always in the main pond area, never the little side bogs where the frog laid. The bog is only about 2 feet wide and maybe 6 inches deep but full of pond iris.