I'll be starting a month long renovation on my pond in 10 days' time, mainly to improve the bakki shower system (installing a more powerful single pump to replace the existing 2 small pumps - this increases the turnover rate per hour, plus to make the bakki shower shower directly into the pond instead of into a retention tray which spills the water into the pond as is currently so). And also to install a series of micro bubble diffusers to replace my existing conventional airstones. I think my filter system is already very good, growth rates are excellent, but I'm just trying to make a good thing even better.
Current in my pond is strong below the water surface and my koi do get lots of decent exercise.
80% of my koi are show quality but my priority is for personal viewing rather than shows. And yes, the standard of shows in Malaysia is very high. Last year's GC was a Sakai Benibana kohaku 89cm. Sakai wanted to repurchase it for USD 120,000 (or thereabouts, I think), but the owner wasn't willing to part with it. The koi is the last in the Benibana line, which is why Sakai wanted it back so badly. It's not mine, by the way.
