Do LED lights stress fish?
Matthieu Lebon
2025-09-11 23:28:28
Nombre de réponses
: 16
So no going blind as far as I know, but stress is a real possibility. When tank lights come on the fish can go into a mad dash panic. The brighter the light, the more stressed fish can get when they turn on. Stress is there, as you can tell by some fish breathing more heavily and maybe some color fade and overall panic swimming craze. So fish won't go blind, but to reduce stress, more gradually increase light levels. You can turn on room light a few mins before tank lights, or wait for natural sunrise to brighten room before turning on tank light. Stress is a real issue, specially with LED, since they are quite bright and turning them on and off change the light level considerably.
Antoine Lamy
2025-09-11 21:16:27
Nombre de réponses
: 18
The obvious change: the plants which were barely alive, barely multiplying, have gone wild growing and multiplying. Of course, not the best thing for the fish - since they had a little less room for swimming. My assumption was that higher light -> happier plants -> less NOx -> happier fish. But something in this thinking must be wrong. The timer turns the lights ON at 8 a.m. and turns them OFF at 10 p.m. (so a total of 14 hours of light per day).
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