Mature koi Japanese stock

Gin rin and normal ogata benigoi and gin rin chags in the Norwich area please inbox message me please for more information 

Gin rin and normal ogata benigoi and gin rin chags in the Norwich area please inbox message me please for more information 

I’m looking into starting a Koi fish farm , I know nothing about Koi fish but I wanted input from others on how to start small and on the right track. What kind of Koi to buy and what kind of indoor aquarium to start with first before moving towards a larger tank outside when Koi get larger

Maybe a bit of a strange one…. Has anyone successfully converted a hot tub (not working) to use as a small koi pond ? If so how did you do it ?