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How long can lights stay off?


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As the title says, how long can can lights safely stay off on a planted tank before the plants get harmed? Reason being is that I am going out of town Sunday morning and coming back on Tuesday afternoon. There's no one available that can come in and feed the fish so was thinking about just unplugging the light so that the fish will hibernate through the couple days. But I don't want to kill the plants in the process.


No CO2 and I was going to wait on flourish until I get back. Or should I go ahead and leave the lights on and the fish get a 2 night fast?

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