Immediately go to Kmart and get a double outlet wave castle air pump and then to the
LFS and get the two biggest airstones and tubing and drop em into the water at 8 and
6 inches ... could be the leaves, etc. are running anaerobic and toxing the water
out. as you said, they are gasping. Ingrid

"Simmons" wrote:
I have a large pond (3500 gallons) that has been home to a dozen koi for the last 8 years. I closed it up at the end of October (Massachusetts) and for the last two days the fish have been at the top of the water gasping for air. I have never run into thi
s problem before and was hoping someone here might have a reason for it and a solution to the problem.

I have a deicer running 24/7 which leaves a good portion of the surface open. (No other pumps are running) The last few weeks have been brutally cold (below zero at times) and last few days have been in the high 20's.


Any suggestions why the fish would be doing this?



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