I would suggest to anyone here to go to a koi show in your area and talk to people that have koi in the show and ask them about koi husbandry and the size and setup of their ponds. Our town, koi club are koi show is very small and up till this year we would allow no one outsde of our club to enter. in the beginning of this club it was for watergardens
but more and more people wanted to have koi so we became a koi and wartergarden club.
And now all members know the difference between the two.
As for the talk about UV's they can do more than kill algae.
I'm not saying you need a big koi pond but I will say there are a lot of watergardens that should not have koi in them. So if your building a pond for koi do that, If you want a watergarden for koi, build it for koi and then for a watergarden.
As for size it's pretty easy to get koi over 30". I will admit that some koi grow quicker than Gosanke's like Chagoi's and Asagi's I've seen a chagoi over 40" and there was one in england that was hugh it was over 4' and weighed 90 lbs.
but more and more people wanted to have koi so we became a koi and wartergarden club.
And now all members know the difference between the two.
As for the talk about UV's they can do more than kill algae.
I'm not saying you need a big koi pond but I will say there are a lot of watergardens that should not have koi in them. So if your building a pond for koi do that, If you want a watergarden for koi, build it for koi and then for a watergarden.
As for size it's pretty easy to get koi over 30". I will admit that some koi grow quicker than Gosanke's like Chagoi's and Asagi's I've seen a chagoi over 40" and there was one in england that was hugh it was over 4' and weighed 90 lbs.