No need to evenb thin k of a sand type swimming pool filter which I
seriously doubt yu were not considering to begin with, but more along
the lines of the Tetra or Eheim or Oase or Laguna pressure filters
commonly used in smaller ponds. Yes they work and work fine........but
without doubt the HOzelock "Bio Force" pressure filter with UVC is
about the best bang for the buck especially when it comes to support
and the price of replacement UV bulbs, as some of the other brands
have oddball high dollar UV bulbs. The higher price for the bulbs
does not make them work any better.....I run a system on my wifes
preforms thats good for 2000 gal. I have a few p[reforms coupled
together and probably opull close to 1800 to 1900 gal of water and its
clear. and algae free......and that is in full sun in the hot sunny
south........with quite a heavy fish load......albiet they are loaded
with mainly tropicals its still a heavy load. Even when we had goldies
and smaller koi in them the Bio Force worked great...Probably $450 or
less for a Biiio Force to suit yur 4000 gal cap....possibly cheaper if
you shop around or catch a sale. I found one that wa in use for less
than a month for $50.....complete with 25 feet of corrugated smooth
interior hose ....as well as a fiberglass water fall weir....Certainly
no need to spend $700 for a filter to work on 4000 gal of water.
...On Sun, 29 Apr 2007 18:53:28 -0400, "Promextheus Xex"
wrote:
Hi,
I was thinking of getting a pressure filter with a built-in UV for a pond
that's near 4000 gals. I have a small pond off to the side that's about 60"
dia and 18" deep. I usually grow some plants in that and the water flows
from there into the main pond via a small stream.
The pressure filter is about $700. I want to try to control the greenness
this year. Are they good and worth it?
Here are a couple that I was looking at:
http://www.petsandponds.com/securestore/c237479.2.html
http://www.petsandponds.com/securest...6504903.2.html
- Prometheus Xex
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I forgot more about ponds and koi than I'll ever know!