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Old 06-26-2010, 01:29 AM   #71
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The color temp of LED's is pure white. This means less blue is needed and the color temp is whiter in person then with an incandescent. On reefcentral, a guy has made a dual driver for LED strings with dimming. The driver would drive both a blue and white string and be built for less than $20.00. XP-G's are better for the white coloring than XR-E. Xr-e's are used mainly for the blue color. As noted before, optics on a tank this size are not worth the price. A 10G reef can easily be kept with 16 LED's spaced accordingly. A mix of 2 white to 1 blue is a good color for most people.
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Old 06-26-2010, 01:32 AM   #72
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I'm not worried about getting T5s I have a t5 set up for my freshwater tank. I was just wanting to try something new out.
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Old 06-26-2010, 02:07 AM   #73
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Well, check out nanotuner.com. If you want LEDs go for it. I am happy with mine.
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Old 06-26-2010, 02:09 AM   #74
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Where are u in H-town. My buddy from high school owns city pets by beltway 8. He get some unusuall stuff. There is also a "guru" for the led at fish ranch. At fondren and 59. I think thats where it is. Plus there is gallery of fish in the river oaks area. Worth a look. High end aquarium stuff.
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Old 06-26-2010, 02:13 AM   #75
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My hydrometer read 1.026sg. My refractor read 1.022sg. Off by .004. Thats huge!.

Now the LED thing.

I think that if you are wanting a quick light, for a 10g, campacts or t-5 are great. You can grow a lot of nice coral.

LEDs that are manufactured are crap IMO. Of course, the high end pacsuns are not. There is no dimming of LEDs unless you are using a sub par driver (or power supply with puc). If built properly like jimbo or I or Ziggy is doing then you will be satisfied. The actual lights put of no radiant heat. The heat is taken away by heat sink and high powered fans. I have 90w on my tank and they have the par of a 150mh. But use about 3/4 the power. Then you also save by not needing a chiller. The dimming in LEDs is only seen after years of use. So, if you use high quality parts dimming will not occur until about 8 years down the road. This is like buying ferrarri parts and building in your garage. If done properly, you get a ferrarri. The reason LEDs are cool is because they are controlable. Like you could have a cloud pass over.

As far as spectrum, My blues are 460. Same as actinic. My whites would be 20000k. This is based on the power I supply. LEDs are new and hard to understand. There are too many manufactuers putting out sub-par products. But they technology is there. We just need to work on the proof.

I have a birds nest that looks better than it did in my friends 150mh. Is it luck?
Where did you get your LEDs? Thats the only thing holding me back, LEDs! Haha! I cannot find 20000k LEDs anywhere, nor any place that has anything speced for more than 6500k

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Old 06-26-2010, 02:42 AM   #76
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LED's are as my post stated PURE white. This means 6500k in LED's is like 12000k in incandescent.
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Old 06-26-2010, 03:21 AM   #77
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LED's are as my post stated PURE white. This means 6500k in LED's is like 12000k in incandescent.
Now I am really confused...So 6500k in LEDs is the same as a 12000k t5?

And I can dim these LEDs (drive them at lower current) and still have them keep their kelvin rating, right? Id love to be able to dim the whites and blues to get different combinations of color (blue/white mix that is).

I may try this out on my pico tank. Its a 2.5g tank. Might 3 whites and 3 blues be a good plan for keeping LPS corals? Or might this be too much PAR for 6in of water?

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Old 06-26-2010, 03:43 AM   #78
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Where are u in H-town. My buddy from high school owns city pets by beltway 8. He get some unusuall stuff. There is also a "guru" for the led at fish ranch. At fondren and 59. I think thats where it is. Plus there is gallery of fish in the river oaks area. Worth a look. High end aquarium stuff.
I've been to city pets and I get all my plants from Fish Gallery haha.
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Old 06-26-2010, 07:02 AM   #79
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Agreed. I have a fantastic T5HO fixture with 6 bulbs in it and I love it to bits. Well worth the $180AU.
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Old 06-26-2010, 12:13 PM   #80
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Well, not exactly 12000k, but it was an example. Look at aquailluminations. They use XP-G's and a ratio of 2-1 white blue, and get any color imagined. For a 2.5G tank, 12 XR-E's would be good and you could dim them down as well. You could also use Luxeon Rebels. Just use a lower output LED with a dimming driver like the one i posted and you can set it to your liking.
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