LED lights

[gakayaker12234]

So I have been concidering switching to LED's on my display, and heard that these are a cheap alternative. I currently can't afford a big LED system for my 72 bowfront, so I am debating putting 2 of these over it. This has 450 5mm LEDs in it, half blue half white. This would be cheap and convenient. Do you think this would work for a reef tank? Let me know what you think!
http://www.ebay.com/itm/225-Blue-WHITE-LED-Aquarium-Plant-Grow-Light-Panel-/230608812761?_trksid=p4340.m263&_trkparms=algo%3DSIC%26its%3DI%252BC%26itu%3DUCI%252BIA%252BUA%252BFICS%252BUFI%26otn%3D5%26pmod%3D370510237303%26ps%3D63%26clkid%3D1268723723990119166">http://www.ebay.com/itm/225-Blue-WHITE-LED-Aquarium-Plant-Grow-Light-Panel-/230608812761?_trksid=p4340.m263&_trkparms=algo%3DSIC%26its%3DI%252BC%26itu%3DUCI%252BIA%252BUA%252BFICS%252BUFI%26otn%3D5%26pmod%3D370510237303%26ps%3D63%26clkid%3D1268723723990119166</a>

Edit: Sorry I posted the wrong link. I meant 1 of these.
[IMG]http://www.ebay.com/itm/450-LED-AQUARIUM-CORAL-REEF-GROW-LIGHT-PANEL-WHITE-BLUE-/300590243877?pt=LH_DefaultDomain_0&hash=item45fc932025">http://www.ebay.com/itm/450-LED-AQUARIUM-CORAL-REEF-GROW-LIGHT-PANEL-WHITE-BLUE-/300590243877?pt=LH_DefaultDomain_0&hash=item45fc932025</a>

 

[dawgface]

I think you'll be throwing $75.00 down the drain honestly.

 

[gakayaker12234]

Thats what I have heard just wanted to see if anyone knew anything about them. apparently the bulbs are only like 1/4th of a watt

 

[dawgface]

I thought I saw 13w per unit... Can't seem to find that area.

On my phone in eBay mobile version, pita.

 

[morganatlanta]

You could probably do with a few of these @ $143/each

http://www.ebay.com/itm/48-inches-60W-20000K-LED-3400LM-Aquarium-Fixture-/220808408800?pt=LH_DefaultDomain_0&hash=item336934eee0#ht_2968wt_905">http://www.ebay.com/itm/48-inches-60W-20000K-LED-3400LM-Aquarium-Fixture-/220808408800?pt=LH_DefaultDomain_0&hash=item336934eee0#ht_2968wt_905</a>

Build in 20*3W(170LM) high power LED
Build in 2 x 20-36V output IP66 waterproof led drivers
Adjustable stainless steel hanger
Waterproof power switch
9 x 60°, 90° or 30x70° Led lens. Default is 60° lens. If you preferred 90° or 120°, Please specify in you order
Color temperature: 20000K (we can supply other color mix such as: 12000K, 15000K, *45mil 445nm, *45mil 460nm and *45mil 470nm, **45mil 405nm UV, **45mil 410nm UV, *42mil 630nm, *42mil 660nm please refer to seller before bid. *Additional charge @USD0.33/pc, **Additional charge @USD4.38/pc.)
Seal Standard: IP65
Input Voltage: 85-265V
Frequency range: 47-63Hz
Rated Current: 1360mA
Rated Power: 60W
Size: 1219.2mm(48 inches)×52mm×60mm(108mm - from the bottom to the top of hanger)
Net weight: app. 2600g

 

[crew]

The LED's need to have at least 3w each if you want to punch farther than 12 inches down

 

[falos]

the ecoray60 uses 1w led and is able to purduce 350par at 18in 240 at 24

 

[lilrobb]

falos;681596 wrote: the ecoray60 uses 1w led and is able to purduce 350par at 18in 240 at 24

With 30degree optics maybe - I am testing a 55x3W unit right now and without optics it is around 300par through 24" of water

 

[mcphock]

I've got 20 3w LEDs over my gallon freshwater tank. The DYI cost was like $200. I think you should look down that path if you want cheap LEDs.

 

[jef4y]

The big question is what you can deal with in price vs feature.

Prebuilt high end = Big cost, nice build, complete control & integration right out of the box.

Prebuilt low end = much lower cost, some good some bad builds, few have dimming control or controller integration.

DIY = lower cost, turns out as well as YOU make it. Integration & dimming possible with time & development on your end.

Personally, I could have done DIY and saved a few bucks, but a high end pre-built was worth the extra cost in trade for the time it would have required from me.

 

[silver surfer]

Whatever road you go down, make sure they are dimmable!

 

[lilrobb]

Silver Surfer;681674 wrote: Whatever road you go down, make sure they are dimmable!

Why?

 

[bulkrate]

Well, for starters some of the LED systems under consideration in this thread are more in line with metal halide systems with regards to light output. I'd imaging that without the ability to control the light level to acclimate the existing corals in your tank you'd stand a good chance of shocking/bleaching/killing them.

A 3W white LED puts out a LOT of light. Couple an array of them with narrow-degree optics and you're pointing something like what illuminates the Luxor hotel down into your tank. ;-)