"Ka30P" wrote in message
...
snips
She found a white EPDM liner at an auction and would like to
use it in a koi pond. That's right white!
Now the idea is that the koi will show up loverly against the white and
our
challenge that I put before you is how to do that.
Now I'm thinking....
a bottom drain and skimmer, of course, and a nice long handled soft brush
and a
commitment to maintenance.
But for the stuff that doesn't go through the bottom drain and caught in
the
skimmer and we want to keep this water crystal clear what do you all
suggest as
far as filtering, really polishing the water?


Hi,
http://www.mobilroof.com/faquv.html suggests that there are other problems
and they concern exposure to the sun. Some of the carbon (which gives EPDM
its UV protection) is removed in order to add titanium oxide.
Others have said that keeping it white would be a problem and I agree,
brushing would be the only way I see to accomplish this. Gin clear water is
much easier to accomplish. My opinions, since this pond will require
daily/hourly brushing you might as well have a DE filter as the finish
filter. First would be, of course, a large settle tank from the sump of the
pond which will be opposite where the water re-enters the pond, this would
be covered from the sun . Second would be an aerated "pot scrubbie" basin.
Third a veggie filter which flows to a smaller sump and then is pumped to
the DE and back to the pond. In this setup clean water is pumped to the
pond, no dirty water is pumped at all. And while they are out there brushing
they can net the bottom for the big stuff using a pool net, the kind with
the 'fin' on them.
HTH -_- how
no NEWS is good