Quote:
Originally Posted by sphelps
LEDS can't touch the intensity and penetration of halides, for clams and SPS halides win.
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actualy they can and have less frop off through the water colume. people switching from MH to a good LED set up are finding they have to dim there lights to between 40 and 50% and slowly increase them over a couple weeks to prevent bleaching. quite a few get to about 75-85% and leave them there as they are getting better growth and color than they did with there old MH or T5s.
Quote:
Originally Posted by sphelps
LEDs do burn for 10 years but halides will also burn for 5+ years but you still have to replace them every year. My guess is that LEDs will require replacing somewhere around 3-4 years and the cost will be ridiculous, likely cheaper and easier to buy a new fixture.
And who really cares about dimming?  |
MH have a drop off of 20-30% in intensity and they also have a color shift after 1 year aprox. thats why it is recomended to change them yearly.
LEDs are rated for 11.4 years at 12 hours a day and at that time they will have a 30% drop off in intensity and no color shift. so you can guess what you like but just shows you haven't read about them or bothered to look up the specs.
I don't know.. I always wished I could do a gradual ramp up in the morning over say 2 hours for my sun rise instead of the 2 stage sun (actinics then MH
) then the reverse for night time..
Steve
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