Hi, this is my first posting.... I am extreamly new to pond keeping and and have a question on water murkyness. I have a 50 gal round preformed pond that was given to me by a friend. It came with a fountain. I have it all set up and have been running it for about a month now and I have some comet goldfish in it and I pulled som frogbit floating plants from my indoor fish tank along with some crypts and some fast growing stem plants. Everything has been going well until recently. In the past week and a half the water has become murky and I no-longer can see the fish in the water. Any suggestions on how to clear up the water? I know next to nothing on pond keeping. I also have other questions but will put them on another thread.