Have a 1,000 gallon fish pond and have had for 6 years with no problem. In last 2 weeks have lost 3 koi. I have treated the pond with a 7 day treatment of Knock Out. The pond water PH was high (9 i think) so I have put recommended stuff from a local pond store and it is down into range now. This am I have another fish floating on side and swimming with it's head down. I was told not to change water out it would stress the remaining Koi too much. Any suggestions on what could be wrong that I can correct. This is the first time we have ever had any problems with our pond. Also want to mention that my trouble started about 4 days after I found a live baby coon in our back yard, not sure if this would have anything to do with it.
Fish Dying
- Thread starter CherylD
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You need to test ammonia, nitrite, and KH also. If you can please post the results and some pictures of the fish.
Hi, so sorry for your loss!
How many fish did you have in there before they started dying? Could be that the fish load got to be too much for your filter to keep up with (?)
I hope you can save the rest of your fish
How many fish did you have in there before they started dying? Could be that the fish load got to be too much for your filter to keep up with (?)
I hope you can save the rest of your fish
bettasngoldfish
Maria
Trying to lower ph can cause stress and even death. A ph of 9 is fine for goldfish and koi. Best to leave it alone.
Here is the water test from this afternoon and pictures of 2 of the fish that have died. The other one that has been floating was at bottom of pond now still alive for now. The orange was alive on Saturday and then dead on Sunday afternoon. The other one I found in skimmer 4 days before orange one died.
Ammonia less than .25
nitrate 4.5
Alkalinity 130
Ph 8
Ammonia less than .25
nitrate 4.5
Alkalinity 130
Ph 8
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bettasngoldfish
Maria
Nitrate or nitrite?
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I am so sorry about your fish. Test the nitrite . Are those lesions on the orange fish?
Only have 6 no bigger than 6 or 7 inches
Added one last week afraid to add anything. On had 6 the orange was the biggest added a new one back in april
States Nitrite
There were only 6 to start
j.w
I Love my Goldies
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Wondering if raccoons could have injured those fish and they just died from wounds and shock? Although if the raccoons would have gotten a hold of them you would think they would have eaten at least one or more. Can the raccoons enter the pond by a shallow shelf or is your pond deep sided? If deep sided they might have tried to grab the fish and just injured them.
bettasngoldfish
Maria
If you have ammonia and nitrite showing up there is a water quality issue. Both are poisonous to fish.