[RxFisher]

I picked up a 48" LED light from Sams's $35
It fit my 55 gallon grow out tank perfectly

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[thedood]

Looks good. Is the light coverage over the whole tank? It looks like it. I may have to replace my 48" shop lights. Whats your initial impression?

 

[CowBoYReX]

That does look good, that's sam's club?

 

[SingAlongWithTsing]

any idea on how many par you're getting?

 

[Seattle_Aquarist]

Hi All,

I believe that is the Lights of America LED Shoplight; Costco offers a similar shoplight by Feit that is cool white and 38 watts with 3700 lumen. Here is a video done by a GSAS member and LFS shopowner showing results for the Feit model and comparing it to Finnex Planted + and Finnex Stingray. FYI the Feit model provided PAR=27 @19" depth with some tannins in the water. The Planted + delivered PAR=20 @19" depth and the Finnex Stingray delivered PAR=10 @19" depth
https://www.youtube.com/watch?v=-I-fUrI5mwo

 

[thedood]

@Seattle_Aquarist I would say that is good results.

And good bang for the buck.

 

[RxFisher]

Yes very similar
Got it at Sams's club
I find it to be very crisp white
Compared to my grobeams
Not what I would choose for a display tank
But great utility
And as the video says I would use a take cover for safety


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[jeffkrol]

Flip..

slightly adjusted for "eyeball" 4300k LED shop light.
turface substrate and some algae/diatoms throwing it "bit" into more yellow territory.

 

[RxFisher]

Thanks for the flip


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[RxFisher]

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[thedood]

I wonder how that would stack up against a 48" fluorescent shop light with two of these in it: Shop GE 2-Pack 32-Watt 6,500K Daylight Fluorescent Tube Light Bulbs (Common: 48-in; Actual: 48-in) at Lowes.com

 

[jeffkrol]

I wonder how that would stack up against a 48" fluorescent shop light with two of these in it: Shop GE 2-Pack 32-Watt 6,500K Daylight Fluorescent Tube Light Bulbs (Common: 48-in; Actual: 48-in) at Lowes.com

5400 lumens vs 4500 lumens..

Pretty close to equal considering all factors..

 

[thedood]

5400 lumens vs 4500 lumens..

Pretty close to equal considering all factors..

But the led would direct all of its light down where the tube goes everywhere. I wonder if taking reflectivity into account if the tubes have enough loss to where the led provides higher par at the substrate?.

 

[AquaLady86]

Hmm I wonder how adding a few strips of rgb would do...

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[jeffkrol]

But the led would direct all of its light down where the tube goes everywhere. I wonder if taking reflectivity into account if the tubes have enough loss to where the led provides higher par at the substrate?.

some studies have shown that, on a watt/watt basis and even considering t5's can produce 100 lumens per watt when most older LED's were around 50ish the LED still outperformed t5's on a 2:1 basis. Much due to exactly what you deduced.
Which was why I 'conservatively" said they were equal-ish.. Err on the low side so to speak.
One can deal w/ more light easier than less..
That 20% less lumens of the LED is nothing really..
I just didn't want to go so far as say the light is actually say 40% stronger yet 20% less lumens..