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Old 06-09-2003, 11:23 PM
Gallandro
 
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Default Please Help Pond Fish Dieing

absolutly no die off at all in the top pond, only thing not effected
in the botton pond have been two goldenorfs .. liners and stock
exactly the same in both ponds. The ponds have been going 3 years and
this problem only started in year two and keeps commingback .... after
this time if it was a chamical I would have expected it to have go
into the top pond by now ?


"dkat" wrote in message .net...
If you are only having die off in the lower pond, then I would suspect some
type of ground runoff (pesticide?) that is collecting in the bottom pond but
either from the filtering or exposure to air going into the upper pond does
not or has not to this point made the concentration yet to bother the upper
pond.... Are the liners different in the top vs bottom pond? Have you had
any die off of the upper pond at all? What other differences are there
between the top and bottom pond other than the level?

DK

"Gallandro" wrote in message
om...
I have two large ponds, One pond is higher than the other (only
slightly) and runs into the other pond. There is then a pump that
takes the water through a filter then back to the top pond. My water
have been tested for Amonia, Nitrate and Nitite, and all read zero.
The strange problem is the fish is the bottom pond have started to
Die. They stop eating, stay at the bottom of the pond them come to
the top to dye, twitching and listing as they go. They look very
healthy apart from clamped fins. There are no visible parasites like
flukes or Ich. This is not the first time it has happened. last time
I think I stemmed it by adding salt or it may just be
coincedence(parasite / bacteria medications have no effect) it went
away so I restocked and now 5 months down the line I'm here again.
any ideas ? remember the top pond is never effected ?

MIKE