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Old 27-06-2005, 09:46 PM
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That was 6 feet by 15 feet in size - sorry for the omission !

" ..." wrote in message
Hi folks,

I need some help with planning for a new pond.
I am building a 6 x 15 kidney shaped fish pond and was going to fabricate
a biofilter in a large drum.
This would follow the many DIY plans available ...
I was going to hide it inside a 1.25 meter waterfall....complete with
access from the back and plumbing to reverse flush clean the filter....

However, a friend of mine who has had a pond for many years has suggested
a stream with a few deep pools separated by two waterfalls.
He tells me these are capable biofilters, I believe that is what he has,
and it's a new option for me as you can't do that in aquariums...

I am a seasoned aquarist with both Salt and Fresh water aquariums.
So the usual idea of mechanical, chemical and then biological filtration
is standard operating procedure for me.
For the pond I had chosen a skimmer and pail with a net plus a filter in
front of the pump as mechanical filtration.
I was planning on following it with a UV lamp, and then the drum biofilter
/ waterfall....

My questions are these:
Is a stream, which I have room for, as good as a crushed gravel 40-gal
drum for a biofilter?
Will the stream require draining and flushing periodically like I had
planned for my drum filter?
If so what is the typical interval and process?

Thanks for any help and suggestions you can provide !
Joe Ficalora