how long do you run your lights ? - The Planted Tank Forum
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post #1 of 31 (permalink) Old 06-22-2014, 01:32 AM Thread Starter
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how long do you run your lights ?

I was curious how long you run your lights on a planted tank .
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post #2 of 31 (permalink) Old 06-22-2014, 01:37 AM
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7.5 hrs I find gives plant growth with less algae forming on the glass. Takes about
three weeks before I need to scrape it. But I do allow it to be on there beyond when I can first see it as I WILL miss a couple of spots when cleaning it if I don't let it get to where I can see it well.

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post #3 of 31 (permalink) Old 06-22-2014, 01:48 AM
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All my medium light tanks are on for 8 hours straight, high light tank is on for 7.5 hours straight, and low light tanks are on for 9 hours straight. 4 out of 6 tanks have co2.


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post #4 of 31 (permalink) Old 06-22-2014, 01:53 AM
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9 hours but there's a 4 hour dark time in there to break it up.

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post #5 of 31 (permalink) Old 06-22-2014, 01:53 AM Thread Starter
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lights

So I guess its normal to get a film of green algae on the glass ? I cleaned it about 3 or 4 weeks ago , and I noticed it is coming back. Wipes off easy.
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post #6 of 31 (permalink) Old 06-22-2014, 02:01 AM
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Does it wipe off on a white paper towel as green or a sort of dark tan-orange to brown color? If the latter its diatoms.
How tall is the tank?
What lights do you have?
How long do you leave lights on for?
How high are they above the substrate?
What plants do you have?
What are your nitrate levels (if tank is cycled)?

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post #7 of 31 (permalink) Old 06-22-2014, 02:54 AM Thread Starter
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algae

It wipes off green. Lights on 8 hrs daily. Nitrates are 40 ppm.
Lights: T5ho one 6700 k 55 watt and one 650 nm roseate bulb. 21 inches above substrate. 3 inches ecocomplete. . am amazon swords , annubias , misc.
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post #8 of 31 (permalink) Old 06-22-2014, 06:01 AM
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I had some sort of algae on my glass, not sure what type. Regular aquarium snails (ramshorn mini ramshorn, mts, pond, bladder) would occasionally nibble on it, but never made much of a dent.

I got a pair of nerites (10gallon), and they cleaned it up within the week, and they've kept it clean since.

For what it's worth, I think my tank is on something like 4 on, 5 off, 5 on currently. not sure if it was the same initially.
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post #9 of 31 (permalink) Old 06-23-2014, 09:42 PM
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From when I turn them on to about 8:00 PM at night. Not trying to be a smarty-pants, I just don't pay attention to when I turn them off and on. But it's about an 8 hour run of lights.

I have no algae. I use a full spectrum lamp and a sunlight lamp together to replicate as close as I can natural sunlight. I use no ferts, just fish poop and food. No CO2.

Wait! I *think* I've got some weird kind'a algae that like clings to the plants and looks like spanish moss or something. Just a little and I don't worry about it; just one plant.

But I never have to wipe the glass. I do have a bristlenose, though.

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post #10 of 31 (permalink) Old 06-24-2014, 02:22 AM
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Finnex planted plus. 24inches above substrate. Low tech with no co2 or excel. Heavily planted dosing a light ei dose.

8 hours a day and plan to goto 10 once its fully filled in. In the past I had a bit of algae but its been dying off little by little as my plants keep growing and propagating

75 Gallon Low Tech w/ Green Terror Pair
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post #11 of 31 (permalink) Old 06-24-2014, 02:25 AM
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post #12 of 31 (permalink) Old 06-24-2014, 02:25 AM
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I usually have mine at 10 hours of strong light per day, with fertilizer and CO2
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post #13 of 31 (permalink) Old 06-24-2014, 02:26 AM
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post #14 of 31 (permalink) Old 06-24-2014, 02:34 AM
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I have my lights and CO2 on a timer which runs for nine hours. The timer is critical with CO2 to avoid pH fluctuations which encourage bacteria to grow. The amount of time give or take an hour is not nearly as important as consistency. You can add shrimp, corys, and ottos as your tank stabilizes to keep algae completely under control.
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post #15 of 31 (permalink) Old 06-24-2014, 02:35 AM
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5 - 6 hours
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