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Old 06-04-2014, 05:01 PM   #11
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blues 50% whites 30% seems to be the magic number for my tank. Any more I get bleaching...
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Old 06-04-2014, 06:55 PM   #12
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I'm getting very minimal bleaching now, mainly on my birdsnests. I'm thinking dialing down my whites. I think I remember ready that corals prefer or utilize blues better? I may be wrong.
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Old 06-04-2014, 07:17 PM   #13
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Quote:
Originally Posted by dragonfisher33 View Post
here's the article that enunciate the difficulty of using a Par meter to measure an LED fixture, especially full spectrum LED.

Aquarium Equipment: PAR Meters and LEDs - How Accurate are the Measurements? A Comparison of Three Meters and Lux to PAR Conversion Factors for LEDs — Advanced Aquarist | Aquarist Magazine and Blog

many forum members exhibit the same frustration when trying to measure the Par level of the LED fixture, whether on the surface, substrate, or somewhere in between
The par meters we use as hobbyists only give a ball park estimate to begin with and the colors that it says are hard for par meters to read are colors that coral don't really use anyways.

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Old 06-04-2014, 07:17 PM   #14
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I have an Apogee PAR meter and have found that the full spectrum and the straight blue and white units put out about the same PAR. I have a 21" deep tank and have mine at 100% blue, and 40% white. I have 120 degree optics.
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Old 06-04-2014, 07:17 PM   #15
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I'm getting very minimal bleaching now, mainly on my birdsnests. I'm thinking dialing down my whites. I think I remember ready that corals prefer or utilize blues better? I may be wrong.
Yea they mainly use blue. The whites are more for your viewing.

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Old 06-04-2014, 08:33 PM   #16
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How do you run your ebay LEDs?

I'll give it a shot, see how the corals react. I'll dial down the whites and up the blues slowly every week.
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Old 06-12-2014, 01:06 AM   #17
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Well, I dialed down my whites to about 20% and my blues at 50%. Hopefully that'll help with the bleaching and let my corals recover quickly.
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