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Old 06-11-2013, 12:15 AM   #11
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You must remember that the 1500 lumen is not coming from 1 source but being distributed throughout the 4.6 sq. ft. area of your tank. That means your 1500 lumen will become 326 lumens (1500/4.6) which is only about 800 LUX at 12 inches below the LED.
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Old 06-11-2013, 12:22 AM   #12
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Thanks Godfrey and JeffAquarius.

Help me understand lux, lumens, with respect to tank lights. Can you equally compare lumens in this way? Literally one lights lumens is 1500 whereas another lights lumens is 1670 which means with respect to brightness they are almost identical. If that is the case then doesn't it seem to be a no brainer to add the 6ft of strip lights for $23?
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Old 06-11-2013, 12:41 AM   #13
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The LED has individual lumen rating while the lighting fixture manufacturer has already included the total lumen rating at 1 foot below the fixture and not just for 1 LED. The LED has a deceiving approach to sell their product. To over simply, yes you can get that 1500 lumen if you bundle up all those LEDs at one spot.

1 Lumen = 1 candle per sq ft
1 Lux= 1 Lumen per sq meter
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Old 06-11-2013, 11:23 AM   #14
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By comparison Marineland has 54 LEDs and produces 3340 Lumens. It means each LED has 61 Lumens compared to the strip with only 13 Lumens per LED.
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Old 06-11-2013, 12:57 PM   #15
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Ok ok I think I've got it now. The lumens per led is the crucial number. 16 lumens per led is not close to 61. Are there any other led strips like that that are used that have 16 lumen leds?
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Old 06-11-2013, 03:37 PM   #16
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Don't forget the factor that lenses can add.
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Old 06-11-2013, 09:07 PM   #17
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Cheapest thing you can do at this point is to add a T5 HO dual actinic light in front of the LED unit.

I can understand that you want to keep the cost down, but aside from that, go with your gut and try adding the ebay strip that you are considering. The Marine Land fixtures were an attempt for them to try and jump on the LED bandwagon and lure people in to buying at a lower price point. The lighting effect is not pleasing to the eye, has no control of color temperature, nor the ability to create a dusk-dawn effect as all the bulbs run on one circuit.

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Old 06-11-2013, 09:37 PM   #18
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If you add a weaker LED strip that's blue, the stronger whites are just gonna wash them out anyway. Maybe look for a strip of 1 watt blues.
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Old 07-04-2013, 10:40 AM   #19
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Alright here is an update. I ended up buying a used led strip light. I bought the innovative marine skkyelight 24"actinic light. I think this accomplished exactly what I was hoping for. So this is the marineland reef capable light and the strip light. You can see the pictures.
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Old 07-04-2013, 10:53 AM   #20
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Looks nice.
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