We are looking at a property that has a pond and river. The visible rocks and water seem to have a lot of algae but the fish we can see seem to be o.k. I know absolutely nothing about a pond or maintenance. Is this normal? I know in my swimming pool that would be a major problem.
The owner said all she has to do is change the filter in the winter. She said the pond will be completely covered with lily blooms later.

Where is this located? Is it in full sun? Shade? Are there a lot of trees near it? Can you see debris in the bottom? Is it fed by the river? On well water? How many gallons?
Unless it is a naturally occuring pond, you may be in for a lot of maintenance....worth it but a lot of work depending on the size

OK we only saw it once, and are going back with the realtor for a more in depth look at the whole place. The owner was kind enough to show up around unannounced.
I believe the pond gets a lot of shade. There is a little bubbler fountain at the beginning of the river - would that be the source? I don't believe you can even see the bottom, but could see a couple of gold fish swimming around so it wasn't completely opaque. She showed us some mosquito fish in the river. It is a fairly large layout, maybe 40 -50 feet altogether. But the "river" is not very wide.
The pond isn't a make or break on the deal. Just curious I guess as to what I would be getting into. Is there anyone in the pond club that does inspections and recommendations? (for pay of course.)

Maybe you can take a pic?

Good idea.