High Power LED vs T5HO

[300g]

180w led vs t5ho 8x54w = 432w
any comment ??
http://s571.photobucket.com/albums/s...LED%20Mar2010/

[RuGlu6]

Originally Posted by 300g

180w led vs t5ho 8x54w = 432w
any comment ??
http://s571.photobucket.com/albums/s...LED%20Mar2010/

All this looks good, however it always comes to PAR values under 20" or so of water.
And we still yet to se an LED's that would provide any PAR reading higher then ~50W MH bulb.

Obviously OK for Fish Only.

[StirCrazy]

Originally Posted by RuGlu6

All this looks good, however it always comes to PAR values under 20" or so of water.
And we still yet to se an LED's that would provide any PAR reading higher then ~50W MH bulb.

Obviously OK for Fish Only.

um.. LEDs are pumping out just as much PAR as a 250 watt MH and even up to 400 watt levels in 20" of water.. you have to use the optics to match the power you want.

Steve

[RuGlu6]

Originally Posted by StirCrazy

um.. LEDs are pumping out just as much PAR as a 250 watt MH and even up to 400 watt levels in 20" of water.. you have to use the optics to match the power you want.

Steve

Oh, thats good news.
Can you provide any reference, please?

[BlueAbyss]

http://www.advancedaquarist.com/2010/2/aafeature2

[StirCrazy]

Originally Posted by BlueAbyss

http://www.advancedaquarist.com/2010/2/aafeature2

ok there has to be some info with this to. Solarius to my understanding did not use Optics which is why the MH puts out slightly more PAR and the T5 is pretty much the same.

now optice greatly improve the output by focusing the light, but this is a slight down size also which is cost. not fo the optics as they are only about a buck each, but for LEDs. the more you focus the more you need.
I don't have the exact numbers for spacing for no optics and so one but for 40degree optics you need to be with in 2" of the next LED to reduce the "Spotlight" effect, you could get away with 2.5 to 3" with 60 degrees and probably 4ish with no optics, Ron might know the exact distances.

Steve