[/quote]IMHO your best bet is to build the pond deigned for koi and then other fish will love it too. I look forward to the pics mate and will try and help best I can! The first thing I'd do is upgrade the filter pretty seriously if you want to improve things as those box filters tend to clog up a lot and need a lot of cleaning! I know a few DIY filter designs that don't cost too much to make and are dead easy to clean. I'll have a look which will be best for your site in the new thread.[/quote]
OOHH that sounds good ED, about the DIY filters, will you/did you post them on here?
Think I posted a couple of links but will dig them out again and post here.
Basically though you just need waterproof containers of some sort and then some way of containing the K1 (it gets through any gap less than 6mm or so!!!) and air pipe to move it around for cleaning. I might start a new thread on here about pond filters...
It's all still running well thanks guys. Will try and remember to take some photos when I'm over my folks next time. Future plans are to convert the filter on this pond to run on air like my new pond as it's much more efficient. We will keep the skimmer running on a pump to power the waterfall though on a separate circuit from the bottom drain and K1 filter.