I would love some koi, but.....
They arent going to work with my current set up unfortunatly.
As you can see the water quality isnt great. The existing 2 ponds arent as deep as needed for koi either.
I do have a bunch of goldfish though. Some as large as 10". They had babies in the pond for the first time this year, which I was pretty surprised to find. Due to the depth of my pond they are taken into the basment and placed into a 90 gallon "winter vacation" home.
I probly should have predator problems, but fortunatly for the pond (but not for me at times) both neighbors have very large dogs that seem to keep predators away pretty well.
If I wasnt focusing my reef tank as my main hobbie, it would be a whole nuther story. I would have UV, a surface skimmer, one very large and deep pond, with a waterfall and a bog area, a bridge, and a bit of a small river system conected throughout.
Fortunat for my reeftank, this is just somthing that will be a neverending work in progress, that will be changed/added to as time/money permits. It is on back burner financialy to my reeftank. I have spent next to nothing on the whole thing, including plants. Mostly sweat equity.
I think for everything, including plants, fish, rocks, mulch, liner pumps and lights I have spent less than $150....and alot of very labor intensive work. I got all those rocks off the side of the road in 2 months time from many many different places around here, including many of my plants. Goldfish luckily only cost 10 cents a peice, just gotta grow them up mice and big. Its been a 2 year process of work so far and will continue till who knows when.