...when shopping for led they always say "comparable" to..... look at a 48w cfl it says 200w "equivelant" BULLSHIT!
...if you use led you'll still need the same amount of wattage as an hid dont go for this "oh its 500w led ".... bullshit it is not a 500w led growlight it is 500w equivalent.
I just wanted to point out that the comparison being made, or the "equivalent" thing, is not a comparison to HIDs, but rather to incandescent
I've been reading up on consumer labeling requirements on the DOE web site and in order to get the consumers mindset off of watts, as a brightness comparison, and onto lumens, a CFL package will state some thing like "65 watts, 300 watt equivalent" while leaving out the "300 watt incandescent bulb
This is being done for several reasons, one being that consumers have, in the past, purchased their incandescent bulbs based on wattage as a measure of brightness. This worked for incandescent bulbs when there was no competition, but wattage is only a measure of the power consumed by the bulb in question and not a measure of brightness.
A problem was created as newer technologies came along with bulbs or diodes that put out the same number of lumens as an incandescent bulb but with much lower power consumption. You yourself made the same wattage comparison when you stated "if you use led you'll still need the same amount of wattage
as an hid", which is not true. You can get the same amount of lumens as an incandescent bulb using far less watts, and someday you will get the same amount of lumens as a HID while using less power i.e. wattage. That day is not here yet.
And Dawg, that was good reading, though it was started four years ago and has continued until this year. A lot has happened in the LED industry during that time and the prices have fallen, though not yet low enough for my wallet. I'm still waiting for an inexpensive high output (lumens), low power consumption (wattage) LED that has been doped for the perfect spectrum or PAR for our favorite plant, with a little UVB tossed in. It can be done and will be done someday.
Two questions for Ayos, who said "I am looking to see if a led light would do my plant any good and if so what color would be best?"
First, how many plants are you working with here and, second, at what stage of development are you referring?
Disclaimer: I'm not trying to start a LED vs. HID vs. CFL discussion, only trying to clarify statements already made.
I hope this helped... 52.