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Old 12-03-2004, 08:37 PM   #1
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lights and timing

Hello, Due to an algae problem I want some advise.

Right now I have 2 65 watt 50/50 actinic, 2 65 watt 50/50 daylight and 4 moonlights.

The moonlights are on 24/7 and all of the above 50/50s are on for 10 hours on a timer.

I have the ability to time the actinic and the daylights seperately if I get another timer. What timing is the best?

I was thinking actinic from 0800-2000 and daylights from 1000-1800. Does that sound reasonable?

TIA
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Old 12-03-2004, 09:07 PM   #2
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The easy way to do it is run both for 10hrs and be dun with it! If you have a real bad algea prob. it could be from some other source than light. How long has the tank been set up? What kind of water are you using (like) tap,ro,rodi ?? And if you are using ro water and your tank has been up and running for more than 3 or 4 months you could try backing the light down to 8hrs and have your phosphates checked you may have bad filters in your ro??
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Old 12-04-2004, 03:29 AM   #3
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i wouldn't blame the algae on the light. i flood my tank with light for 12 hours a day and my algae probs are minimal. i agree with KMyers18 check your phosphates. haha. and with the lights. i hade the same problem with timming. just make shure that the atinics are on for 12 hours a day. i personaly prefer to stager the timming of the atinics and the daylights. just seems more natural
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Old 12-04-2004, 03:18 PM   #4
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Spectrum of the "daylight" bulbs could be contributing a bit. But if the tank is new, algae is just one of the stages you have to go through.
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Old 12-04-2004, 03:45 PM   #5
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also old bulbs can help algae
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Old 12-05-2004, 02:18 PM   #6
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OK here we go,
I have zero phosphates in my tank, I have a 1 year old tank that has been great. I now have some green and brown algae on the sandbed. At this point I fugure that it is just normal and as long as it doesn't get worse I will live with it.
My Nitrates are 10, nitrites are 0 and ammonia is also 0. The bulbs in my setup are only about 60days old. New lighting put in 2 mos ago which is why I was timing my algae growth with the lighting. I use store bought RO water.
I'll go with the consensus and go with 12hour lighting of both actinic and daylight since that way I only need the one timer that I already have.
Thanks
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