What Is The Ideal Photoperiod Duration? - Page 2 - The Planted Tank Forum
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post #16 of 20 (permalink) Old 03-10-2016, 04:07 PM
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so on this topic. I have my first light that can very brightness. is it gonig to cause algea issues to have the tank in "dusk" mode 3 hours on either side of my true photoperiod (prolly 10par or less) and then have full brightness 6-8hrs (30ish par)?


I have been running this way with my new setup for about 2 months now and have been pretty happy with the results. I do have a larger difference than you are proposing between dawn/dusk and midday - I am running about 10 PAR at dawn, 65 PAR midday, and 5 PAR at dusk. Once I got it dialed in to reasonable levels (was running midday too high at first), I have noticed very little additional algae growth. Now if I can just get rid of the BBA that grew during start up, I should be good.
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post #17 of 20 (permalink) Old 03-11-2016, 03:07 AM
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If you are using an Android or iPhone, try downloading the Tropica application. If you are using a Med to High light and you are just starting up a new tank, the ideal is 6 hours a day for the first 3 weeks. After that you may increase the photo-period to 8 hours. On the 6th week, you could then increase it to up to 10 hours. Hope this helps.
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post #18 of 20 (permalink) Old 03-11-2016, 08:13 PM
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As long as you do not have algae or plant health issues with a longer photoperiod, I would try for as much as 12 hours (more viewing time). I am currently at eight hours in a planted tank set up in January but now that my algae issues have subsided, I will soon increase the photoperiod. My established 600-gallon reef tank was a 12-hour photoperiod with no algae problems.

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post #19 of 20 (permalink) Old 03-11-2016, 08:23 PM
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Quote:
Originally Posted by Kampo View Post
so on this topic. I have my first light that can very brightness. is it gonig to cause algea issues to have the tank in "dusk" mode 3 hours on either side of my true photoperiod (prolly 10par or less) and then have full brightness 6-8hrs (30ish par)?
Like the responses above, it will depend on your tank. How tall it is. The nutrients in it. The plants, etc. A lot of different factors.

It's always good to pick a starting point and see what happens as each tank is different. 6-8 hours sounds like a good starting point, especially if you have the dusk like on before and after. You may get algae, you may not. You'd have to adjust accordingly. Good luck!

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post #20 of 20 (permalink) Old 03-12-2016, 04:56 PM
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Wouldn't this depend on the types of plants, how much CO2 is running, lighting, etc? Seems like there wouldn't be a definite answer. Observation of your own aquarium is probably the best gauge.
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