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#1
07-09-2010, 03:25 PM
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Love the way the fixture looks!! Can't wait for the readings. You have given me much to think about, I am in the process of upgrading my aquarium and was planning on getting the AI LED. Now after seeing this one I am having second thoughts. The readings and the cost will probably be the deciding factory.
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#2
07-11-2010, 12:51 AM
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Below is the non scientific Vertex Illumina SR 1200-200 PAR measurement taken with a Apogee Quantum Meter. My tank is 18" tall and the fixture is 6" above the surface.
White 100% - Blue 100% - Royal Blue 100% 759 about 5mm below the surface 484 On left frag rack 392 At top right coral colony 242 Center of Red Monti 227 Center of Clam 185 Front Elegance Coral 214 Bottom right middel of tank 148 Bottom rear of tank  Last edited by TheDogFather; 07-13-2010 at 01:07 AM.
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#3
07-11-2010, 01:47 AM
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that just blows me away that those little LED give off that much PAR.
How high is that light from light to bottom of the tank. what was the par on the T-5's I hope that this light has promise not like the other one wit the problems it had with warranty circuits boards LED's and unit blowing up
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180 starfire front, LPS, millipora Doesn't matter how much you have been reading until you take the plunge. You don't know as much as you think.
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#4
07-11-2010, 04:41 AM
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Hey Mike, can you show that from the end of the tank to give an idea of the front-to-back spread?
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Spontaneously Purchased Scleractinian anonymous
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#5
07-11-2010, 04:58 AM
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#6
07-18-2010, 04:30 AM
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OK I don't want to seem down on these lights but it seems (in addition to previously voiced concerns about irregular refraction at the non-planar air-water interface, light attenuation due to longer path through the water for reflected light compared to light focused by optics, and incomplete reflection from non-pristine interior tank walls) eggcrate would be out of the question considering the wide dispersion angle with no optics. When light is more or less vertically entering the tank eggcrate doesn't seem to have much effect but with the wide spread of light coming from this fixture a large amount of the light would be blocked by the eggcrate.
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120 gallon sps/anemones/LPS reef since 2004 Apex controller 8 x 54 watt T5 PowerModule Herbie's silent overflow system Jebao DC 12000 return pump Jecod CP-40 Cross-flow circulation device Mini Bubble King 180 Barr Aquatics calcium reactor Bucket fuge
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#7
07-18-2010, 05:32 AM
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Wow the shimmer is indeed back! Pretty cool demo.
Great point about the eggcrate but In my opinion the clear netting looks far better anyways and would accomplish the same thing with little to no effect on light transmission for ANY lighting system.
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#8
08-30-2010, 05:31 PM
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Any updates or more then and now photos? Personally, I'm not super impressed with the PAR readings you showed so far. For optimal growth of SPS you want between 400 and 500 PAR. My DIY LED array achieves that in the middle level of the tank (10 inches down my 20 inch deep 75 gallon) at less then full power with the array 6 inches above the water. If I turn it all the way up and lower to 3 to 4 inches above the water I get way more. I get well over 250 PAr at the sand bed 18 or 19 inches below the water surface.
Your clam may do alright but as I understand it clams need 250 to 300 PAR (I may be wrong on that but it's the number I recall). Quote:
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#9
09-01-2010, 12:58 AM
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Quote:
I'm not going to get into a PAR contest with your DIY fixture, I get excellent growth (at 50% power I might add) and my clams are growing very well. The 48" Vertex Illumina LED comes very close in PAR output to my previous fixture, ATI PowerModule with 8x54W T5's and that fixture is no slouch. I'm guessing your DIY uses optics to achieve higher PAR values but at the cost of spread so you'll have to hang it high to get decent coverage thereby negating all that extra PAR... -TDF "Stoney corals appear to photosaturate between 400 and 500 PAR so having 700 or 1000 PAR is probably pointless other than for bragging rights. I doubt it will do the corals much good." -Ron99 Last edited by TheDogFather; 09-01-2010 at 01:15 AM.
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#10
09-01-2010, 02:44 AM
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Well this is a review and discussion forum, LED comparisons are relevant.
I have to agree with Ron. For that much money, I would expect outrageous par. Judging by those readings, it is only about 20-25 percent better than my light which is a tenth the cost, a fifth the size and made by communists. The readings are probably not accurate though. I wager that the vertex must have better output than that.
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