I've kept fish outdoors for around 10 years or so, koi,goldfish,orfes,,roach,tench and my prized possession is Sidney the sturgeon. I built the pond with my brother, and we'd never built a pond before so please don't be too critical. Also I don't use a UV anymore, the ponds very natural, don't do much to maintain it except clean the pump/filter etc and scoop and leafs/scum off the top.
Thanks midnight.
My main computer with the zillions of good stuff, (photos) has died. I did just pull this photo from our site though. Its our biggest mud pond. All the rest are much smaller. All of our ponds are mud ponds with the exception of just one.