LED vs. MH

[bang guy]

Originally Posted by HatesSushi
I would think you would be able to adjust the output to whatever level you wanted. 10K, 14K, 20K. I'm not sure but I do know that LED output is easily controllable.
I think his point was that they compared top of the line max LED output to middle of the road minimum output MH. I see this often when people compare bulbs. They'll compare a premium T-5 to a sucky PC blue-bulb Coralife and conclude that T5 is better than all PCs. Or, they'll compare Lumens instead of PAR (even worse).
When the independed tests by people that know what they're doing come out I'll listen. Until then it's just more mass marketing to me.

 

[anacaonda dan]

Originally Posted by Bang Guy
I think his point was that they compared top of the line max LED output to middle of the road minimum output MH. I see this often when people compare bulbs. They'll compare a premium T-5 to a sucky PC blue-bulb Coralife and conclude that T5 is better than all PCs. Or, they'll compare Lumens instead of PAR (even worse).
When the independed tests by people that know what they're doing come out I'll listen. Until then it's just more mass marketing to me.
Curious as to what PAR is?
LED's don't use ballast (earlier).
They're becoming quite common in the stage lighting industry.
Cool-running, very rugged, and exteremly long life.

 

[watson3]

Originally Posted by anacaonda dan
LED's don't use ballast (earlier).
Then you have not seen these

 

[bang guy]

Originally Posted by anacaonda dan
Curious as to what PAR is?
LED's don't use ballast (earlier).
They're becoming quite common in the stage lighting industry.
Cool-running, very rugged, and exteremly long life.
WELCOME Mr. Anaconda!
PAR = Photosynthetic Active Radiation. Basically, the amount of useable light.
I'm not saying that LED are not the wave of the future, I'm saying I have seen nothing to say it is other than marketing or subjective statements like "it's bright".

 

[moneyman]

I too will wait ..
I find that the PFO site is full of marketing propaganda. A lot of companies already put 5mm LEDs into regular screw-on light bulbs. Eventually, they will start to use those 3-Watt Luxeon like the one installed on the Solaris. I think the LED will replace the florescent tubes but not the MH.
LED doesn't use ballast like MH/florescent bulbs. They use transformers to convert AC into DC much like your computer power supply.

 

[anacaonda dan]

Originally Posted by Bang Guy
WELCOME Mr. Anaconda!
PAR = Photosynthetic Active Radiation. Basically, the amount of useable light.
Snipped...
.
So, a measurement useable for a specific purpose, i.e. photosynthesis.
I see.
Curious as to how that's measured and for which organisms. I would suspect that different wavelengths are more suited for different plants or animals.
LED's are very tuneable in that respect.
I must do more research!
Thank you.