OK, scent I moved here, are LL put in a pond.
How do you keep them clean?

I know skim the top to get the flowers and junk out but I am thinking of putting some gold fish in it... but i dont want to if I dont know how to keep it from looking icky

. The water color dose not matter, scent the bottom of the pound is painted green

but how do I keep it from the icky green stuff from growing in it?