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Help choosing the right led light!

I already posted this on the general lightning forum but i figured this would be better subforum for this topic.

I have 1.20 / 1.20 / 2.00 tent and due to high elecricity bills i'm forced to leave my 600w hps for a while.

i would order the new lights from a good source abroad but due to the time i have i'm left with buying them from a local growshop.

i'm planning on scrogin' 2 plants in 3 gal coco buckets and i thought led light would be the most efficient in terms of yield/electricity saved.

i have the opportunity of buying 2 led panels (120w each)

the first is 120w Blue-Red (55x 3w, Bridgelux, Cree, Epistar) 460nm+630nm+660nm (11%+27%+62%)

the second is 120w 5-band High Red (120x 1w, same manufacturers as above) 430nm+460nm+610nm+630nm+660nm (5,5%+7%+12,5%+12,5%+62,5%)

I'm planning to support the two led panels with few smaller wattage cfl's in veg and flower.

Thoughts?
 

UncleCrab

New member
I'm no expert, but I'm on my fifth grow using LED lights either by themselves, or mixed with fluorescents or hps. From what I've been able to learn, the jury's still out concerning the ideal spectrum ratio. From the breakdowns you have posted for the fixtures you are considering, I think any of them would be ok spectrum-wise.
I started getting the results I wanted when I stopped focusing on the mix of spectrum and instead focused on actual light output. This can be tricky to gauge with LED's. You can't really judge them on wattage ratings, as the figures quoted are often exaggerated or intentionally misleading, and there's no good rule-of-thumb formula for comparing LED fixture wattage to CFL or HPS fixture wattage in regard to useful light output. Lumens and similar units are also no good, as they measure the spectrum of light the eye can see, as opposed to the spectrum that plants can use for photosynthesis.
To really get an idea of how a fixture will perform as a grow light, look for the Photosynthetic Photon Flux, or PPF rating. This number will tell you how many micromoles of photons of photosynthetically active light a fixture will emit per second.
If you can find this rating for the fixtures you are considering, my advice would be to choose the one with the highest PPF rating, regardless of the specific spectrum breakdown. Chances are that if it is lacking in any crucial spectrum, the white light from the CFL's you're planning to supplement with will fill in the gaps.

Good luck on your grow!
 

Skinnyboy

New member
I am on my first grow with GrowNorthern MS0006 Led. It consumes about 184 watts. It blows away my friends 250w hid light.
 
S

SPG*

Hi WW I have the mars2 5watt LED lights x2 1200 w and 900watt. Yes happy with them (even though the debate of Hps vs led seems to always be going on,lol)good thing is the LEDs are driven less to preserve life and so the 1200w for instance only pushes out 540watts for me :)
(390watts for the 9)
 

onavelzy

Active member
Veteran
I am on my first grow with GrowNorthern MS0006 Led. It consumes about 184 watts. It blows away my friends 250w hid light.

when you say it blows away the 250 W HID, what are you meaning? it seems brighter or the plants are growing better or what?
 
Just popping in to inform I bought the ms0006 led panels. So at the very moment I have two panels running on ~180w power and I'm very amused with how the plants grow under them. Atleast in veg the growth rate is very aggressive. We'll see how they perform in flower.
 
S

SPG*

you be careful with leds! I recently "semi fried" my current crop because they were too small to cope with the light.My bad,Should of used half the power
this was with a 1200 Watt and little plants 7-8' away still got scorched i.e:pending pic
 
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