Definitely cold water stress. Two other koi started to lay over. I brought them in...in a 30gal tub of their own water. I am doing a gradual re-warming and they are doing better. Upright and swimming. I actually put styrofoam to float on top and a bag of ice. This has slowed the re-warming. I want it to be very gradual. So far..so good. I'm just angry because I probably could have saved those other two...just never dealt with this before. Ignorance is not always bliss!!!
My next question. When they are re-warmed and I put them in my quarantine tank....How do I treat them? I have baytril and nuflor to inject. I also have BGDX, quick cure(form/mal green) and PP. Is there something I should definitely do....or just wait and see? One of the two is a shiro utsuri with a yellowish area on the back. Might be devitalized tissue?
I measured the temperature at the bottom of the pond...36deg last night!!! I shut one of my air pumps to prevent that supercooling effect. So, just one pump with 2 airstones at the surface. I am watching them all very closely now. Thanks again!!!