My pond is about 20 feet from a street light, resulting in ~70% of the pond being lit at night. I have not noticed any problems. Not sure if the kois ever slept because there was always a mad rush for the pellets whenever I tossed some in.
As a matter of fact, one very experienced keeper here mentioned that he has a florescent light by his pond to keep the kois from being spooked at night. He claimed to have reduced the problems of kois with bent spline. Any thoughts on this claim?
