Different lighting-hours every day ? - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 05-10-2012, 08:33 AM Thread Starter
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Different lighting-hours every day ?

Do the plant mind me being inconsisstent with the timing of the light.

Lets say I run from 8AM-4PM one day and next day I run from 3PM-11PM.

Total 8 hours a day.
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post #2 of 7 (permalink) Old 05-10-2012, 11:05 AM
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Your Lighting Question

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Originally Posted by upngo.mp View Post
Do the plant mind me being inconsisstent with the timing of the light.

Lets say I run from 8AM-4PM one day and next day I run from 3PM-11PM.

Total 8 hours a day.
Hello up...

Aquarium plants are tropical and used to long hours of daylight. If you want healthy plants, then purchase a timer for your tank lights and set it for the lights to come on for 12 hours and off for 12 hours. That's a good starting point.

B

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post #3 of 7 (permalink) Old 05-10-2012, 12:08 PM
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Not all aquarium plants are tropical.

And, unfortunately, not every tank and setup can handle a 12-hour photoperiod without running into deficiency or algae issues. 8 hours is plenty of light for plants, typically. And a little fluctuation in times of day here and there won't be too much of a problem.

But BBradbury is right - a $5 timer automates things and makes it all better for your tank in the long run.


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post #4 of 7 (permalink) Old 05-10-2012, 12:33 PM
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There are cloudy days in the tropics and there are trees that block the Sun as certain times of the day. Also the Sun's intensity changes during the day.

So some variation of photoperiod will work
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post #5 of 7 (permalink) Old 05-10-2012, 01:24 PM
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Plants suffer outdoors in natural conditions as well. Many times I have hiked in the backwoods and mountains exploring ponds streams and lakes. Areas that have poor nutrition have plants that show signs of nutrient difficiencies, algae infested ponds with still water have submersed plants that look like crap, and those heavily shaded have little in the way of plants. One stream grows thick beds of plants during the rainy season when the trees are barren of leaves and the water gets more light, while during the summer the plants die back under the shade of the tree canopy.

Areas that have the most lush natural plant growth, are those areas that have the most consistent, prime conditions: good sunlight, rich nutrients, and a steady supply of natural C02 from the underground water table.

For more consistent growth, keep your lights on a timer at the same times every day.

Robert Paul Hudson

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post #6 of 7 (permalink) Old 05-10-2012, 02:00 PM
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12 hours is a long time. Start with 7 or 8 hours, then work up to longer photoperiods if you want to and watch for algae.


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post #7 of 7 (permalink) Old 05-10-2012, 02:50 PM
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To reiterate, some fluctuations in photoperiods are okay, but plants need regular amounts darkness as well as light to grow well.

are you a sink or source?
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