100W LED Multi Chip

[BobFish]

I have come across a thread where there is a group buy going on to buy 100W Multi chips for what seems a good price that someone has brokered with a Chinese manufacturer. You can see link here, and please I have no attachment to this other than to buy my own 100W chips in thier group buy!
http://www.sandiegoreefs.com/forums/...481#post764481

[SeaHorse_Fanatic]

Not to rain on anyone's parade, but I had my 10w emitters turned way down and still burned some of my corals until they adapted to LEDs. I can't imagine trying to light my tank with 100w emitters. They'd have to be dimmed almost off at first and the corals right underneath would really take a beating I think. (I talked about 100w emitters with my LED buddy & he is of the same opinion that they'd be too powerful for our application).

Lots of people thought I was a little crazy going with 10 watters and now they're going with 100w emitters?

I would also ask the manufacturer what kind of warranty is on those since they are well over $100 each. At least with the 3 to 10w, you're looking at only a few dollars per, so if one burns out early, it doesn't hurt.

According to the thread, they recommend one 100w emitter per 2' x 2' area. For 10w emitters, I use roughly 7 so 70w at full power. The advantage is that if one of mine burns out, the light from neighbouring emitters covers for it. With these 100w emitters, using only 3 over a 6' x 2' tank, if one burns out, a third of my tank is dark.

Just something to think about. With less than 20 out of the needed 50 emitters ordered, I doubt that this gb will actually take place anyways.

Does anybody have a link to a reef tank that is actually using 100w emitters? I think hearing someone's personal experience with using 100w emitters over their corals will be the best info for this new technology.

Cheers,

Anthony

[BobFish]

Well i think they have a 30000 hr warranty, and that's a long ways away and by then there will be the next best thing. I've be following some of the diy on led's on reef central and yes for the first bit u will have to tune them down.
Just can't see all that wiring and and extra fans, just my opinion. Think they will be what i want to try.
The company that is making them, are putting it together as per the groups instructions of what they want, the group has already done one buy, but i was not part of that. You can read about the first group buy here.
http://www.sandiegoreefs.com/forums/...anel-Group-Buy

[mike31154]

Some valid pros & cons already mentioned re going with fewer, large multi chip LEDs. Although my build also uses 10 watters, I've been following the huge thread on RC about the 100 watt emitters with interest. There's still a lot of wiring involved in doing up a 10 watt array for larger tanks and this could be averted by using 3 or 4 of the 100 watters, similar to a halide pendant set up. You need to use optics & mount them up high. The con, already mentioned is the price, although when you consider some folks pay upwards of $60 for a Metal Halide bulb,.... that needs changing at 6 months or so....

The group buy linked to in this thread involves a custom colour multi chip designed specifically for reef tanks. If you're looking for single colour 100 watt multi chips, they can be had for as little as $30 these days on fleabay. I don't think the price they want for these fancy emitters is over the top considering they are a custom design with the ratio of colours packed on to the single chip deemed ideal for reef tanks. The chip also has the capability of being driven using 5 or 6 channels to mix/tune the colours to your liking.

I have a post on Aquttro's LED supplementation thread relating similar info & including the photo below, of Mr. Wilson's 100 watt pendants. Here's the photo & check the link to Aquattro thread, post #75. If you want to know more about 100 watt emitter's & their performance, Mr. Wilson is a good source, he runs a shop in the Toronto area.

http://www.canreef.com/vbulletin/sho...911#post757911


Tank in Mr. Wilson's shop lit by 100 watt LED pendants.

[StirCrazy]

I don't think thoes are good color combanations, first they will be very blue and second they are missing colors that will bring out the reds in your tank.

now if they replaced 2/3 of the cool white with a nutral white I think that would be a lot better, but as they sit I wouldn't waist my money.

I do like the idea of a 100 watt LED as you could do smaller tanks with 1 small pendant. you can pick up a 100 watt 4500K chip for about 60 bucks so I kinda question the price of these also.

I was wondering if you could put different colors on a chip, now I know you can. I have a high school buddy who lives in china and is the ceo of a large exporting company who also do LEDs I wonder what kinda deal I could get for us.

Steve

[burgerchow]

My kessil a350 s. aka. Tuna bles are 90 watt multichip LEDs made by their sister company Dicon.

[SeaHorse_Fanatic]

I am eagerly awaiting some longer term results from using these 100w emitters. Sounds like the second GB was started before everyone in GB1 even got their emitters yet.

Unfortunately, if they need to be mounted up high, Irene would most likely never let me use these 100w pendants since she worries about how bright the lights will be to the human eye (we have two little girls and my 10w emitters have to be mounted low and with full reflectors to kill the glare). I'd probably have to mount it nearer to the front of the tank and slightly angled back so that the glare would be against the wall, I guess.

I imagine that once there are some longer term results from these First Adopters and it becomes more common to use these multichips, the price and variety will hopefully reach a point where they will be more available and attractive to reefers.

I'll have to swing my Burgess' place to check out his Kessils with the 90 watters to see it in person.

Anthony

[BobFish]

I think if u use lenes you can mount any hieght you want, some are mounting as low as 10" off water, and others higher up, think just depends on weather you use lenes or not. The colors that were picked for the dream chip are the colors that some reefers are already using, and was decided by what they can do for the corals. I posted the link here for those that are interested in joining the group buy. You will never get everyone to decide on everything....lol, what makes us human. There are so many options out there for LEDS that well you can build what ever u want. I am looking at the chips as my main light source, and possibly adding other colors later if needed. Face it with the cost of T5 bulbs and metal halide and how often you have to replace, where as Leds if powered right should last 30,000 hrs min.

[SeaHorse_Fanatic]

I actually like the mix in these "Dream" emitters. Similar to what I would choose.

[SoloSK71]

These would def. be very nice and I would want one except that I have almost no skill in this area so I would not know how to put them together

Charles