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Old 12-29-2014, 12:30 PM   #11
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Doug, the tank has been up for 5 years. Maybe it's just petco that's the problem. They don't survive long. They lived for 3 to 4 days. Thank you.
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Old 12-29-2014, 01:05 PM   #12
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The LED I have is a green element evo quad. 3 watt leds. 64 leds total. 16 actinic, 48 10000k. 75 gallon tank. 48" wide. Thank you.
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Old 12-29-2014, 04:40 PM   #13
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Led lights

That's 2.56 watts per gallon which is quite a lot in the led world especially if the tank is only 24" deep or less.

For example, my system is mostly stoney corals and the 300 gallon tank is 32" deep. I light it with about 400 watts of led with lenses (to accommodate depth). That's about 1.3 watts per gallon. That replaced 1400 watts of MH/actinic which was 4.66 watts per gallon. I think X is right, you may have underestimated the actual PAR the led is producing.

A lot of folks end up buying dimmable panels and many times end up operating them at 50-75% power.

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Old 12-29-2014, 07:07 PM   #14
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Greg, thank you! Live and learn. X mentioned screens to filter lighting. Any other suggestions? I have turned off part of the lights as you can switch it back and forth for wattage purposes. Thank you also x for your help. REALLY APPRECIATE IT. I owned a pet store with lots of tanks and pets years ago. Just goes to show you never have all the answers!!
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Old 12-29-2014, 07:44 PM   #15
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X gave you the answer for non-dimmable LED is to raise the fixture if you are able too depending on your fixture the light might spill over- Try it put- Most these led units tell you to raise it 12-16'' above the water line. When i got the AI I had to do it in stages for acclimation with very low percentages on the control.

Greg no lens (90/120) on your led?
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Old 12-29-2014, 07:56 PM   #16
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Led lights

Yes, I have 60 deg lenses installed on Cree 3 watt leds as the fixtures hang over a foot over the water and the tanks deep.


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Old 12-29-2014, 07:58 PM   #17
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Quote:
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Yes, I have 60 deg lenses installed on Cree 3 watt leds as the fixtures hang over a foot over the water and the tanks deep.


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Old 12-29-2014, 08:53 PM   #18
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The green element light doesn't come with hangers unfortunately. I assume you made some lenses for dispersion?
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Old 12-29-2014, 09:51 PM   #19
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I distribute RapidLED, so I tend to use their stuff. But the lenses makes the fixture more versatile in the way it's hung. Also using lenses helps with color mixing and reduces the rainbow effects.


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