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#41
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I'll post more updates as soon as I receive the V-Stick and LightStudio Cheers! -TDF |
#42
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![]() Yes please post more updates TDF. I'm new to SW but not fish keeping in general. I am still collecting information and a buddy of mine who helps out at SUM has reccomended Vertex to me. I'm planning on a cube tank...size will depend on what I can get away with
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#43
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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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#44
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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. |
#45
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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. |
#46
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![]() Quote:
As for my fixture, yes I used 60 degree optics but spaced my LEDs out evenly over the tank so I do not sacrifice spread. I have 4 rows of LEDs, with 3 inches between the rows and the LEDs in the individual rows are 2.25 inches apart. I actually use fewer emitters then the Vertex unit does. I have 80 Cree XR-Es. Vertex uses 128 Luxeon Rebel emitters (pretty good LEDs for the record, equal to or maybe even very slightly better then the XR-Es I used) for their 4 foot fixture. That is 60% more LED emitters but yet it apparently produces less PAR in the tank. I also do not have to hang my fixture higher because of the overlap in the emitters. I can lower it to about 3.5 inches above my water without any major spotlighting or loss of overlap. I currently have it about 5.5 to 6 inches above the water and it is producing the PAR numbers I mentioned at that height. Basically it is all down to how you configure the LEDs and optics and I guess I do not really understand Vertex's design choice as they could have achieved higher effective output with fewer emitters. Space them out evenly over the tank to get coverage and then choose the number of emitters and spacing between them appropriate for the optics you want to use to produce X PAR at Y depth. Want more PAR for a deeper tank then use more emitters spaced more closely together with tighter optics. Have a shallower tank or don't need really intense light and you can space the LEDs farther apart and use wider optics or even no optics at all for only low light corals or a fairly shallow tank. Quote:
As for output, his PAR numbers look to be about what I might expect having all the emitters clustered down the center with no optics. High PAR up top and down the center of the tank with a rapid drop off as you go deeper into the water and also as you move to the front or the back of the tank. As I mentioned before in other threads, I think LEDs are the future of reef lighting but what I see happening is that people will $h1t on LEDs because they spend huge amounts of money on a fixture then eventually complain that the performance relative to their 250W or 400W MH is poor and that LEDs are no good for reef lighting. It taints LEDs in general when it was really down to the design of the particular fixture. |
#47
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#48
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![]() I'm not sure of actual PAR numbers but I saw a 6 foot version of this thing the other day over a reefer's tank and the whole tank looked very brightly lit. Really surprised me after seeing that narrow little band of leds down the middle. No bad light bleed either which is nice in a living room.
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#49
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![]() Any updates?
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#50
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![]() Sorry, for the lack of updates...
I'm still amazed at the R&D and engineering not to mention the quality of components that went into this fixture, it's simply second to none IMO. Some people bemoan the high price tag of the Illumina but when you consider that these fixtures are hand made in small batches in Austria vs. most other LED fixtures that are pumped out by contract manufacturers in Asia it becomes clear why the Illumina is priced at a premium. I personally am convinced that this is the last aquarium fixture I will ever buy. I am now running the fixture at 100% Royal Blue, 85% Blue and 35% White and coral growth appears to be as good if not better than my old ATI PM and the progressive sunrise and sunset is so much nicer for the fish vs. the drastic shock of lights on or off that non-dimming fixtures do. I will be on vacation in southern Germany later this month and will be dropping in on the Vertex engineers in Austria for a visit. I'll post some photos when I get back in November. Cheers! -TDF ![]() |