Thank you so much for this information she will get what is needed and do as you say.
The pond turned immediately black after two days of rain in Malibu, CA., making the fish completely invisible. I didn't think this was OK of course but the employee at the fish store told her its fine and leave it alone like that !?
The "fountain" structure with the pond to fill up with water is more of an art design ( with no real fountain).
Their is no well water the water source is only municipal water.
As I suspected my daughter ( who is an wonderful "gentle"equestrian trainer on the Pacific Show Circuit) knew not a lot about fish before this (which is sure about to change) ,and removed more like 3/4 th's of the black water and not just 1/4th .
Also how often should 1/4 th (with a remover conditioner) of the partial water changes be done?
{Ray wrote}
>Angela,
By "hose water," I'm presuming you mean water from your municiplal water
supply rather than from a private well -- even though you weren't that
specific. Almost every public water supplier adds some form of bactericide to
their water, which is toxic to fishes. I did notice that you said that when
this pond was originally filled, that the water sat for 24 hours or longer --
but again, you weren't specific in saying exactly how long after this that
the fish were added, nor do you say how many months (or years) ago this pond
was originally filled..
Most water suppliers that add a bactericide (and that's most of them) now
use a product called Chloramine, a combination of ammonia and chlorine which
locks up as a compound and doesn't dissipate very fast at all. This would
be lethal to fish for at least three weeks or better.
While your water supply may have this compound but at a smaller than normal
concentration -- explaining why these other fishes are still living --
iit's more probable that your tap (hose) water contains just Chlorine, which
dissipates slowly over 24 to 48 hours.
It's more likely that your tap water has this Chlorine especially if this
pond was originally filled fairly recently, and if the fishes were added to
this pond soon after allowing this water to sit for 24 hours (or more).
Still, Chlorine in itself is very toxic to fish -- which is the reason for
allowing it to sit for at least 24 hours so that t has time to dissipate. As
3/4 of this pond may well have been refilled with chlorinated water ( too much!) with fish
being in this water, this would explain the fish deaths that were seen.
After 24 hours, and with the Chlorine mostly dissipated, the stronger fish were
fortunate enough to survive.
I can't say what the black water occurred from, but placing carbon in the
filer would probably have removed it. When doing partial water changes, they
should generally be restricted to about removing only "25%" (one fourth) of the pond -- and then (important) , a
water conditioner container chlorine remover needs to be added at this same
time. Call your water company to see exactly which bactericide they add to
their water, and if they add Chloramine get a water conditioner having a
dechloraminator in it..
Then you will be always safe in the future.
Ray
{Angela wrote}
>Hi Harry and everyone,
I am so happy to be here ..I am new but have worked with the science of behavior with many animal species including herps .
Can someone help us with what is going on my daughter' s fish have all died in just a few days at her fountain in Malibu, CA. The "pond" became completely dark after all the rain and I told her to take out just 1/4 of the water and refill it with clean hose water. Unfortunately I think she said she actually took out and put back in 3/4 new water from the hose. They started to die the very next day so far it seems to have stopped and the rest are still OK ? When she originally filled it she used hose water and let it sit for 24 hours or longer. We don't know what to do the pool is 4x 8 and does have a pump of some sort ( I have to find out what kind it is) '
At the fish store where she got the fish the person who works there told her she should have left the water black even though the fish could never be seen ...as it was it's own ecosystem . I completely understand the concept of a natural ecosystem ....but I am not convinced this is a true one and not convinced this is what caused the die off?
I would love to know what and why this has happened to these poor beautiful fish :( . Did putting water from the hose in without airing it do this?
PS. The white belly and the large gold fish have died ..but so far the Japanese big fish and a few of the gold fish are still alive and so far seem OK
____________
________________________________
Ciao, Angela Cancilla Herschel in SoCal
Being kind is more important ..than being important. ~
Any good animal trainer knows the science of positive reinforcement includes...people too. ~
California Wildlife Center, volunteer wildlife warrior
www.cawildlife.org
Sent on the Sprint® Now Network from my BlackBerry®
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