its got a pretty large filter,but i still get the green water.i dont regulate the water changes as strictly as my aquarium.but then i dont know to much about ponds,it was already there when i bought the house.
so answers t questions pleae
how often to change water?
how often to clean filter?
and how to get on top of the green water?
oh and there seems to be a lot of that stringy green hair like algae aswell
give us somr pointers please guys as there are some lovely small koi in there it would be a shame to give up on it
ta very much