How much light do aquarium plants need in 24 hrs?

Answers:
Too little or too much light can be harmful to fish and plant alike. A light schedule must be kept in mind: fish/plants do not experience larger than long daylight hours in their natural habitat and will not respond kindly to intense lighting for long periods of time.

8-10 hours a day is good enough.

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Maximum of 12 hours as this simulates the time of daylight.

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The maximum lighrt hours would be 8-12 hours, just like our daylight time.

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Most plants need 8 to12 hours of light. I suggest fluorescent grow lights. That way your tank will not over heat, and the plants get the right kind of light they need to grow.

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10 hours should be good.

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It depends on the type plants and the type lights. But as a general rule, 10 to 14 hours a day are fine. Fish don't particularly like the lights so they need dark time and too much light can lead to algae.

It's best to set your lights up on a mechanical timer. That way they are on and off the same amount of time every day. I have mine set up to be on 4 hours in the morning, then off for 6 hours during the day when the room is light anyway and then on for 6 hours in he evening. They are off from 10 at night til 6 in the morning