has anyone used these par 38 leds

[mikenjo]

i am looking for a light for a frag tank,has anyone used on of these its adjustable to the color you want
http://www.ledwholesalers.com/store/index.php?act=viewProd&productId=702

 

[jarrodsanborn]

i would wonder what the quality of the led's are, and who makes them. i like the dimming option, but a little bit more you could get a proven par led light. also, 1x3w leds are generally better than 3x1w i wish the cheap bulb was good, but this link below would be a safer bet.
http://www.nanotuners.com/product_info.php?cPath=74&products_id=698
http://www.nanotuners.com/product_info.php?cPath=74&products_id=699

i dont work for them, i have just read tons of good reviews.

may i ask what you plan on using it over? ex: tank size. i hope this is not for your 90.

 

[mikenjo]

it would be for a frag tank not my display

 

[Sean Irwin]

I don't think those are really gonna cut it for you. There seem to be too many LED's crammed into that thing and I don't think they'll cool efficiently which will diminish their lifespan. The 30 degree optics will make that light very spot-light-y, so you'd need a bunch to cover even a modest area. I can't directly comment on the Nanotuner's bulbs but I have an Ecoxotic 14K PAR38 and it's really bright. It actually caused quite a few corals to bleach almost immediately despite a reduced photoperiod and using an opague piece of plastic under the lamp.

 

[jarrodsanborn]

one other thing that goes un mentioned is:
just because it says 1w led, does not mean it is being driven to its capacity. in sean's post above about the leds being close.....and cooling...... they could under drive the leds to avoid that problem, but then it wont be giving as much par as possible. the bigger names have spent lots of time getting the most light out of these bulbs while keeping reliability up. you can return a light to nanotuners or ecoxotic, but good luck returning that light back to china. the extra $30 you pay is for support, and r+d.

good luck, and post pics when you make a decision. we will be interested either way you go.

 

[afboundguy]

That one doesn't look like it's higher quality LEDs. The PAR 38 bulb from the guy from nanotuners or whatever it's called uses 2nd or 3rd generation 3W leds. Although I have been reading a lot of people are having problems with the PAR 38 bulbs as there isn't adequate cooling because there are so many led's crammed on such a small heatsink. Not saying the good ones are junk you would just need to add a cooling fan directly to the bulb to help performance...

 

[PasstheTorch]

I just bought a boostled par 30 for my nano and love it. But I wouldn't put it on anything any bigger than like 10 gallons. And I would go with nano tuners boost led or rapid les par bulbs. Much better quality. My par 30 is so powerful that it bleached a few corals 12 inches ablove the water. The corals are back now but the light they put out is deceiving. Much More powerful than they look.

 

[PasstheTorch]

Like most things in this hobby, you get what you pay for. Cheap led= bad quality most of the time. I looked at that one and posted about it but was told that the 3 watt leds are much better than the ones. So I suggest the same for you

 

[DoctaQ]

the nanotuners and ecoxotic are exactly the same aside from colors and lens angles