How long should i leave my lights on for? - The Planted Tank Forum
 
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post #1 of 12 (permalink) Old 11-29-2006, 11:53 AM Thread Starter
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How long should i leave my lights on for?

I just recently started adding plants to my tank(no fish yet) how long should i keep the lights on for? Its a 55g tank with 2x55 AH supply lights. The only thing i have added so far was excel flourish. I currently have the timers set for 11 hours of light then it goes to the moon lights. I think i will be setting up DIY c02 when i get a chance, I'm really busy with school right now so it might be a week or so... Hopefully i will get injected c02 for xmas. Thanks
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post #2 of 12 (permalink) Old 11-29-2006, 11:55 AM
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I would run them for 8 hours, that will work for now


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post #3 of 12 (permalink) Old 11-29-2006, 02:13 PM
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I think 8 hours is a pretty good start. Too much light without CO2 could lead to algae problems (please correct me if I'm wrong).

Problem with DIY CO2 is you will get some but probably not enough CO2.

I understand being busy in school. Studying for final exams right now actually. Two weeks to go!
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post #4 of 12 (permalink) Old 11-29-2006, 10:00 PM
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Quote:
Originally Posted by Burks View Post
I think 8 hours is a pretty good start. Too much light without CO2 could lead to algae problems (please correct me if I'm wrong).

Problem with DIY CO2 is you will get some but probably not enough CO2.

I understand being busy in school. Studying for final exams right now actually. Two weeks to go!
No necessarily true, I think I was getting so much CO2 from my DIY CO2 that I lost a few fish one night when my airstone did not kick on. The biggest problem is changing out the mixture every 2-3 weeks and some inconsistancy if you wait too long.
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post #5 of 12 (permalink) Old 11-29-2006, 10:02 PM
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post #6 of 12 (permalink) Old 11-29-2006, 10:14 PM
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No necessarily true
That's why I put probably.

You need to factor in surface agitation, difussion method, etc. On a larger tank I'd feel safer using pressurized vs DIY though.
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post #7 of 12 (permalink) Old 11-29-2006, 11:29 PM
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With that much light, even for 8 hours a day, you need to be providing all of the necessary fertilizers, potassium, phosphorous, nitrogen, carbon, etc. And, Flourish doesn't do that - it is primarily a trace mixture, which you need too. Check out Greg Watson's website for inexpensive basic macro fertilizers.

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post #8 of 12 (permalink) Old 11-29-2006, 11:58 PM
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so will you see a lot of extra plant growth if you increase your lighting period from 8hrs to 10 or 12hrs???
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post #9 of 12 (permalink) Old 11-30-2006, 12:40 PM
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so will you see a lot of extra plant growth if you increase your lighting period from 8hrs to 10 or 12hrs???
If you provide the extra nutrients to support the plant growth, yes. Otherwise you will see increased algae growth!!
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post #10 of 12 (permalink) Old 12-01-2006, 12:26 AM
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ok thanks. I used to have my MH's running for 12hrs a day but my tank has since gotten out of wack and i cut it down to 8 i think. I am still debating if i want to increase it again eventually...cutting the powerbill by a third is a pretty good incentive for leaving them at 8
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post #11 of 12 (permalink) Old 12-01-2006, 02:39 AM Thread Starter
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I ran it at 11 for a few day... now i cut it down to 9 hours of reg light and 5 hours of moon lights....
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post #12 of 12 (permalink) Old 12-01-2006, 05:03 AM
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I would run them for 8 hours, that will work for now
Ditto!!

I had a 55G with 2x55 AHS lights. Starting out new, ya dont need alot of light till the plants establish themselves. IME, even if ya got it packed with fast growin stem plants. Start out 8 hours, dose light, get c02 crankin.

See what it looks like after a couple weeks. If ya see a few deficiencies, up the dosing a lil an increase the light an hour. Wait a week or so, an again see what ya got. Yer plants should be growin pretty good about now, an ready to trim.

Then you should be dosing what is required for a 55G. The lights are good at 10 hours, an the co2 should be good at 40-50 ppm.
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