LED replacement metal halide ?

[rgsa8892]

Has anybody tried these E39 Mogul base 60 watt LED replacement bulbs they don't require a ballast and say they equal 400 watt metal halide I can find them up to 6500 k

 

[mcgyvr]

What for? The spectrum isn't optimal at all for this hobby..

They are basically intended for warehouse high bay fixture replacement lighting

 

[rgsa8892]

6500 K is natural daylight that's what I ran with my 175 watt metal halide and my tank did just fine. And actually I wanted to see if you could get them in a higher Spectrum but my main concern was if they were strong enough

 

[mcgyvr]

6500 K is natural daylight that's what I ran with my 175 watt metal halide and my tank did just fine. And actually I wanted to see if you could get them in a higher Spectrum but my main concern was if they were strong enough

They are certainly bright...
If you put them into a suitable reflector it can certainly be used..
I still doubt that the spectrum is equivalent to a MH bulb.. While 6500K says "something" about the color of light it does not standardize on the "peaks" and where they occur in the spectral range..

I have not tried them though but doubt its equivalent to a MH as far as its ability to grow corals and support the needed spectral ranges..
I'm sure it lights up a warehouse aisle though...

 

[alton]

Lamps are labeled with lumens as a measurement of how bright they are? These screw in led lamp replacements, just like they lamps they are replacing require a great reflector. So in using this reflector the leds must produce close to a lumen out put as the MH. A 400 watt MH produces something in the 36,000 lumen range, looking at those led replacements they are in the 9,800 lumen range. Not exactly a replacement. The LED replacement lamps needs to be in the 200 watt range, not 60 watts

 

[oreo57]

Are you referring to things like this?
https://www.amazon.com/dp/B078JP16K...&pd_rd_r=e7707619-ad61-11e8-ad5d-f9d1f1abea37

Yea,as stated above.. not a "real" replacement for 400W MH's.. Not sure how they figure that..

Best off getting some already "direction-ally more efficient" types:
https://www.amazon.com/HN-Waterproo...012&sr=1-3-spons&keywords=50w+LED+flood&psc=1

Then you can "possibly" decrease wattage...like 1:2.....
IF one can get 200L/W COBs one can "do" like 150W to 400...