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Old 02-11-2014, 09:35 AM   #11
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The power bill will be bad enough that you will end up paying for the LEDs in a short time. If the fixture is free, you are going to need new lamps right away most likely. They are between 60 and 100 dollars (U.S.) You can buy LED fixtures for around the same price as high end halide lamps.
There is a reason why it's free.
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Old 02-11-2014, 09:41 AM   #12
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Ill have to look into it the stand I'm building is going to be able to house the halides and led when I change over because no doubt I will ill try them out iv got new globes already
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Old 02-11-2014, 12:09 PM   #13
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LEDs all day. I can think of many reasons not to use MH and no reason not to use LEDs...honestly. For every bulb you have to replace and electric bill you will have to pay you can use that money to either buy corals and fish, or put that money to upgrade your filtration. Same analogy applies for T5 lighting vs LEDs. The key is to buy good LED lights. Someone mentioned Kessil. I bought two yesterday to replace my previous LED lights and absolutely love them.
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Old 02-11-2014, 01:06 PM   #14
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Yes, the shimmer of kessil is unbeatable, even by metal halides.
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Old 02-11-2014, 01:18 PM   #15
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Yay kessils!! I love mine as well. Shimmer is insane and my sps have phenomenal color
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Old 02-11-2014, 02:14 PM   #16
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I have never dealt with halides personally, but I went from T5s to LEDs and I am very happy. Even at the cost of T5 bulbs the LEDs pay for themselves pretty quickly.
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Old 02-11-2014, 03:35 PM   #17
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It's funny, as little as three years ago, your question would have raised a fire storm of comments. Most of us old timers clung to our tried and true MH systems as long as we could until it became obvious we were on the wrong train. MH grows corals great without doubt, but the downsides greatly outweigh the few advantages. Get LEDs when you can, don't invest a lot of money on MH. Come to Missouri, I have a barn full of MH fixtures I'll give you.
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Old 02-11-2014, 07:21 PM   #18
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I wish I could go there Greg but the plane ticket from aus to there would be a bit much
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Old 02-11-2014, 08:05 PM   #19
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LOL. It would be a bit far. I have some projects to do there in a few months , but I doubt I could get thru security with a suitcase full of old MH fixtures.
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Old 02-11-2014, 08:10 PM   #20
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New Dimmable 120W Aquarium Coral Reef Fish Tank White Blue LED Light Black Shell | eBay
these fixtures are $98 a piece, and have the equivalent power of $200-250w MH, have prob 10% the heat generation, and id say maybe a 1/3 the power waste. as pretty much everyone has stated so far. MH were absolutely amazing and great for their time, but that was a previous time. LEDS are the way to go now and theres more and more evidence to show their here to stay. as for your fixture, try to clean it up and sell it to help pay for leds. just as a quick reference of how much overkill 800w of MH is on a 4 ft tank. at my previous job, they had 2-800w MH fixtures over their 400g cube......
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