I saw a recent message on green water. I have a 1200 gallon koi pond,
and this year the water has been really dark green. I can hardly see
the fish. Will this cause the fish to develop ulcers or sickness? I
changed the filter and replaced about 2/3 of the water, but it is still
very dark. If the pond needs shade, is the answer just plants or
maybe an awning??? Thanks for any help. Dan

On 21 Jul 2006 15:46:21 -0700, wrote:

I saw a recent message on green water. I have a 1200 gallon koi pond,
and this year the water has been really dark green. I can hardly see
the fish. Will this cause the fish to develop ulcers or sickness? I
changed the filter and replaced about 2/3 of the water, but it is still
very dark. If the pond needs shade, is the answer just plants or
maybe an awning??? Thanks for any help. Dan

Both very likely.

How many gallons? How many fish, kinds & sizes? Do you have test kits? What
are your water parameters? ~ jan
--------------
See my ponds and filter design:
www.jjspond.us
-----------------

Also ponding troll free at:
http://groups.google.com/group/The-Freshwater-Aquarium

the green means there is abundance of wastes in the pond. you dont say how many
fish, what kind of filter. and especially, you dont say what kind of aeration.
you need to create a veggie filter and get a UV to clear the water. green water
wont, per se, hurt the fish after all fish fry are raised in green water, but if they
do have a problem you wont see it. and the most serious problem is in hot weather
green water will suck all the OXYGEN out of the water and the fish will be dying in
the morning if there isnt hellatious aeration going on all night. Ingrid

wrote:

I saw a recent message on green water. I have a 1200 gallon koi pond,
and this year the water has been really dark green. I can hardly see
the fish. Will this cause the fish to develop ulcers or sickness? I
changed the filter and replaced about 2/3 of the water, but it is still
very dark. If the pond needs shade, is the answer just plants or
maybe an awning??? Thanks for any help. Dan



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Solve the problem, dont waste energy finding who's to blame
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I do not run nor receive any money from the ads at the old Puregold site.
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Zone 5 next to Lake Michigan

---
I am new to ponds, having very recently installed a mini pond with a yellow flowering water lily and two aquatic plants but no fish, in my back garden. Before starting digging, I read quite a few books on the subject and have been given much advice on setting my pond up. I raised the subject of green water on more than one occasion and was told that, if I chose the correct aquatic plants, any green water would clear quite quickly. My pond is in a position which enables it to get full sun for most of the day, a must for healthy water lilies I understand. As I have plenty of rain water, I used that instead of tap water and so far, I don't have green water. No doubt time will tell.
.

I am new to ponds, having very recently installed a mini pond with a
yellow flowering water lily and two aquatic plants but no fish, in my
back garden. Before starting digging, I read quite a few books on the
subject and have been given much advice on setting my pond up. I raised
the subject of green water on more than one occasion and was told that,
if I chose the correct aquatic plants, any green water would clear
quite quickly. My pond is in a position which enables it to get full
sun for most of the day, a must for healthy water lilies I understand.
As I have plenty of rain water, I used that instead of tap water and so
far, I don't have green water. No doubt time will tell.

As long as you don't add fish, green water is less likely. It is
overstocking with fish that is a ponder's undoing most often. ~ jan
-----------------

Also ponding troll free at:
http://groups.google.com/group/The-Freshwater-Aquarium

aeration is essential to preventing foul water tho. Ingrid



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
List Manager: Puregold Goldfish List at
http://weloveteaching.com/puregold/
sign up: http://groups.google.com/groups/dir?...s=Group+lookup
www.drsolo.com
Solve the problem, dont waste energy finding who's to blame
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I receive no compensation for running the Puregold list or Puregold website.
I do not run nor receive any money from the ads at the old Puregold site.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Zone 5 next to Lake Michigan