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Urgent help required - fish dying
Over the last weekend I have lost 7 koi and am at a loss as to why. A few
days ago the koi in my pond generally stopped eating, having previously been ravenous feeders. I tested the water and all tests proved "normal" (ph 8.0, nitrites 0.1, chlorine 0, ammonia 0) except for oxygen which had dropped to less than 1ppm. I run with 2 filters dropping approximately 1500 gallons per hour, two spitters and a fountain running at 250 gallons per hour and can not understand the low reading. I immediately added an air pump with 4 air stones and continue to run that as well, although the oxygen reading has only gone up to 2ppm today. The fish that have died have all isolated themselves from the others, and been very slow moving, although do evade my attempts to net them, right until they are nearly dead. I have noticed that all the dead fish had a heavy mucus coating on their skin making them extremely slimy, and that some of their scales had become very prominent (I have posted some pictures of my latest loss on http://deadfish.mysite.freeserve.com/). My pond is approximately 2250 gallons with koi, goldfish and orfe. This only seems to be affecting the koi though. I am in the UK and temperatures have been very high recently, with the water temp in the pond reaching about 24 C. Any help as to how to help my remaining fish, as well as how to improve the oxygen level in the pond would be greatly appreciated. TIA John North East England. |
#2
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Urgent help required - fish dying
"John" wrote in message ... snip My pond is approximately 2250 gallons with koi, goldfish and orfe. This only seems to be affecting the koi though. I am in the UK and temperatures have been very high recently, with the water temp in the pond reaching about 24 C. snip I am no expert...but it seems like the fish kills over the past few weeks...all authors have mentioned warmer then normal temps in their area. BV. |
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