Dazed and motionless
Eversince I ran a UV filter for my outdor pond my fishes seemed dazed, preferring to stay motionless at the bottom. I've lost 3 Kois in 3 days and it's heartbreaking. They did not seem to get out of this state even when the UV is switched off. Please help me. Thank you.
Hi and welcome aboard.:wave:
What are your water stats? It will also help us know what is the cause behind your situation.:)
hmm. are u sure its the uv if its still going on when its off my be it something else.
A UV sterilizer should be plenty safe to run on an outdoor pond with koi, considering it is hooked up properly. Besides ammonia, nitrite, nitrate, and pH readings, can you also post KH and temp? It sounds as if shock of some sort could be the issue, but without knowing any specifics about your situation, it's very difficult to do much to help you.
How big is your pond? How many fish? How big are the fish? Was there a specific reason you added a UV to the pond? Also, what part of the world/country are you from? Weather changes can also play a big part in pond keeping.
Hello everyone. My apologies for the lack of info. I live in Malaysia with a tropical climate of 36 deg celcius all year. My pond size is 4 ft x 3 ft x 2 ft with the water stats of Ph=7.5, No2-N<0.5 mg/l, No2<1.6mg/l, NH4 & NH3=0.
I have 8 Koi fishes measuring 6 inches. I ran a test with a testpen which proves negative for shock. Appreciate your assistance. Thanks.
Wow, 36 C is very warm! The Koi enjoy cooler temperatures. How long have you had them and have they always thrived in warm water like that? Just a guess, but they may be experiencing lack of oxygen. Try adding more aeration (current) to your pond. Good luck!
I installed a water fountain which helped the aeration. The Koi has been with me for more than 6 months. They were doing fine until recently. The only difference is that it has been raining a lot this past month.
That is quite a few koi for that size of a pond... not only will the temp cause problems (as the fish get larger they need more of everything and put out more waste), but water quality can also fluctuate rapidly. Rain water tends to be cold going in... and with water temps that high, a rapid decrease in temp can cause shock in the fish.
I see a number of possible issues going on...
do we know how deep it is?
The variation of temp is only about 5 deg celcius when it rains. Today I lost another one, I'm down to 4 now. The depth of my pond is 2 feet. During the past 3 days the water is a bit frothy. It came back even after recycling. Clould this be the cause? My pH is still 7.5. What other test can I run to check this? Thanks.
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