A Skimmer is probably a must, and a net in the fall as well

Gale :~)
I'm building a pond ... or rather sinking a pre fab. job with a
small feeder one in rockery behind. Problem is the site has leylandi
and neighbours tall laurel hedge which overhangs .
These leaves tend to blow all over the show in strong winds .
I'm hoping to have fish later on and wondered if these leaves will be
harmful to them - don't really want to cover with net etc. only in the
autumn if I have to.

Any tips on construction / layout would also be most helpful.

Many thanks for any help