Koi & Pond Newbie Questions
 

I agree that algae will be a problem. Even with UV, with no plants and
such a large shallow pool of water, it's going to be difficult.

How does the water get back in the pond after the filter? There's no
waterfall, right? Aside from the aesthetics of a waterfall, it also
provides necessary aeration, so you may need to do something about
that as well.

Dave