My next fixtures will be Double Ended Gavitas.
"I don't pretend to have all the answers, and I think there's something to be said for that" -One For The Road
Brain dead and made of money.
Input wattage is hardly the determining factor for the value of LED lights. You need to look at the PAR (photosynthetically active radiation) output over a given area. For example some lights will require 250 input watts but need fans to cool the drivers (instead of driving photons), and have a footprint so small that you need to hang it 4' above the canopy to cover even a 2'x2' area. So the cost per volume of photons suck.
Kind LED is a classic example
http://hydrobuilder.com/k3-300-watt-...frBBoC4svw_wcB
thats more or less what i saw too.....
https://www.blackdogled.com/?gclid=C...DIkRoC9mPw_wcB
I was looking at getting some of these for the greenhouse
300w for $128 shipped.
http://www.amazon.com/GalaxyhydroTM-.../dp/B00INM0750
Are they shitty? In the comments a guy says two would replace a 400w HPS.
I wonder what the bugs will think of a magenta greenhouse glowing through the night?
Never used LEDs, probably won't until some design emerges as a standard. The whole LED segment still strikes me as a bunch of garage tech and snake oil with a lot of anecdotal hooey and dodgy side-by-sides to back it up.
HPS works.
Shit didn't think of bugs being a issue in a lighted greenhouse.
Some things to consider
1. LED output per watt is about 1.5-2x that of HPS/MH. So if two 300W LED's are needed to replace one 400W HPS, you got some shitty LED's
2. Output per watt will suck any time fans are needed to cool LED panels/drivers. These have fans
3. These lights are 8"x15" in area - size of a legal tablet Now look at how the LEDs are recessed around the edge of the fixture - no way light can spray many photons outside the fixture's footprint. So you have to raise the light way up to get light spraying outside that 15"x8" area. Overlay the inverse square law of light and the answer = not much photonic energy is gonna hit the plant
You get what you pay for. Sadly, it's this kind of crap product that has given LED lighting a bad name.
That is truly how you should feel as the LED market is the wild west. The lighting companies of the world are the ones that will eventually dial this in and many are there or close. Philips, GE, Cooper, Hubbell, Acuity (Lithonia), Cree, etc. There may be some greenhouse specific guys that come out of this, but in the meantime every tom, dick, and harry (or Chen, Wo, and Huang) is creating their own LED fixture.
QFT
Thanks guys for saving me from buying junk
Gettin frosty.
Next round is all GG#4...
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"I don't pretend to have all the answers, and I think there's something to be said for that" -One For The Road
Brain dead and made of money.
Thanks!
They hit day 29 today. Almost halfway.
"I don't pretend to have all the answers, and I think there's something to be said for that" -One For The Road
Brain dead and made of money.
BD - Are you vegging the GGs under an LED?
nope. Thats a T5 array, and some are under a 1K MH.
"I don't pretend to have all the answers, and I think there's something to be said for that" -One For The Road
Brain dead and made of money.
Oh man nice! I gotta get on the horse and get a tent.
"I don't pretend to have all the answers, and I think there's something to be said for that" -One For The Road
Brain dead and made of money.
I like fat chicks.
day 31
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"I don't pretend to have all the answers, and I think there's something to be said for that" -One For The Road
Brain dead and made of money.
^^^Me too, especially after a month when they get moist and start giving off a stank!
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