I am needing a little help.I have a goldfish pond in the backyard everything looked great till we came home yesterday from camping all weekend.It was perfectly clear and could see all the way to bottom.Came home and it is completely green and have lost some koi fish.I not sure if it is from the rain or the whirly birds coming off the trees or what.Any suggestions would help.Thanks WV
Forgot pond is about 16x16 and 2 1/2 feet deep waterfall and skimmer filter.Filter has been pretty clean.And I have noticed some foaming around filter and pump.