hello! my bf and i just relocated from the city to the country and we're trying to rehab the farmette we bought. we need some advice on the care of our pond. it's man made, no liner, about 1/3 of an acre with a 10 inch pipe for drainage. it's overgrown with cattails and what we think is creeping primrose. so far we're just raking out the primrose and pulling out the cattails. is there any other way to make sure the pond doesn't get overgrown again? or do we just keep pulling these plants out all summer? there are some fish and frogs in the pond as well. should we use any sort of cleaner in it? our neighbors told us to use aquashade? any advice (words, books, links!) on how to maintain our pond would be great!!! thanks!!