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Old 10-17-2012, 12:50 PM   #1 (permalink)
 
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Default LED Grow Light

Hello everyone,

New guy here from Vermont. I purchased a banana plant (I think it is a red abyssinian) at my local greenhouse this summer and had it living on my deck until the temperatures started dropping. Its now living in the corner of my living room next to a huge window and sliding glass door. It looks like the red color is fading and it for sure has slowed its growth way down. I cut back on fertilizing it but I'm worried it is not getting enough light. I'd like to purchase a grow light to hang from the ceiling over it...which brings me to my question.

What is the difference, if any, between the blue, red, white, or mixed color LED grow lights I am seeing advertised online? Do bananas have a color preference?

Also, my house is kept a bit on the cooler side...should I be providing some sort of supplemental heat to the bottom of the pot?

Thanks in advance,

Lucas
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Old 10-17-2012, 03:25 PM   #2 (permalink)
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Default Re: LED Grow Light

I wouldn't recommend LED grow lights period. As far as I'm concerned, they're crap.
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Old 10-17-2012, 04:24 PM   #3 (permalink)
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Default Re: LED Grow Light

Is the window and sliding glass doors on the south side?
I think LED's stink too. :^)
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Old 10-17-2012, 04:31 PM   #4 (permalink)
 
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Default Re: LED Grow Light

LED's are the best someone told me
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Old 10-17-2012, 04:34 PM   #5 (permalink)
 
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Default Re: LED Grow Light

LED Grow Lights | Grow Lights by Hydro Grow
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Old 10-17-2012, 04:40 PM   #6 (permalink)
 
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Default Re: LED Grow Light

Can you grow marijuana with LED grow lights? | Grow Weed Easy

And the plants look kewl under the colored lights
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Old 10-17-2012, 04:46 PM   #7 (permalink)
 
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Default Re: LED Grow Light

The Lowdown on LED Lighting
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Old 10-17-2012, 05:09 PM   #8 (permalink)
 
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LED Grow Lights for Dummies
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Old 10-17-2012, 05:15 PM   #9 (permalink)
 
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Default Re: LED Grow Light

Thanks everyone!

So there seem to be two camps here. For those who don't like LED's could you make a suggestion of something that you do recommend?
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Old 10-17-2012, 06:03 PM   #10 (permalink)
 
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Default Re: LED Grow Light

For cheapsters - I like regular old CFL light bulbs in various fixtures inc clamp lamps. The sweet thing is they are so cool, the plants (taro) can grow right up to them. No power usage to speak of. And I have about 6 of them, 60W = 13W actual, on a simple timer and 16/2 cord. But it is not much light from a plant's point of view, with this plus a window facing SW they mostly just fester waiting til spring.
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Old 10-17-2012, 06:46 PM   #11 (permalink)
 
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Default Re: LED Grow Light

Howdy: after looking this post over and reading the info made available, methinks they are over priced and over hyped. I'd put my nanner near the brightest window you have available and watch it for few weeks.

It will tell you real quick if it is happy or not! Tom
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Old 10-17-2012, 09:30 PM   #12 (permalink)
Got pink bananas?
 
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Default Re: LED Grow Light

Pretty darn neat, Sunfish!
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Old 10-17-2012, 10:26 PM   #13 (permalink)
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Default Re: LED Grow Light

For the cheaper option, try fluorescent bulbs. Look for full spectrum bulbs, or those rated at a color-temp around 6500K. Some types of bulbs are specifically marketed for use with plants. If you want to get really serious, buy a high pressure sodium (HPS) or metal halide (MH) set-up.

You might just wanna wait at this point and see how things do without lights.

Oh and pretty sure Tony is being facetious about supporting the LED's.....take the literature provided for what it's worth (and with a grain of salt).
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Old 10-17-2012, 11:14 PM   #14 (permalink)
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Default Re: LED Grow Light

I'd do T-5's before I shelled out that kinda $$ for LED's. They have 6500 bulbs. :^)
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Old 10-18-2012, 01:28 AM   #15 (permalink)
 
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Default Re: LED Grow Light

Okay...so here is my next question. What is the difference between T-5, T-8, T-10, and T-12 bulbs? Is one better for growing bananas?

I looked at HPS fixtures online but my concern is that they get too hot and use too much electricity!
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Old 10-18-2012, 01:43 AM   #16 (permalink)
 
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Default Re: LED Grow Light

I think I'm having de ja vu...isn't this where Richard gives his sage like advice...
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Old 10-18-2012, 02:41 AM   #17 (permalink)
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Default Re: LED Grow Light

MUST USE SEARCH
seriously this has been discussed ad nauseum on canna sites
every single possible facet has been rehashed including iggits who use $200 CMH for the improved UVA UVB output only to place it in a glass cool tube therefore filtering the improved chromaticity right out of existence


t5-8-12 are diameters

T12 is dinosaur nuff said
t5 is only HO with high ambient temps generated by an enclosure THIS MEANS NOT BETTER
T8 is the most common and cheapest for bulbs, ballasts, etc
T832W is the bulb part # prefix
CFL is cheap and available but harder to reflectorize
HPS is most efficient and a burst and fire hazard if not enclosed
MH is a waste of time with all the cons of HPS and none of the pros

electricity use is defined in watts
a 150w HPS uses the same amount as 150W of fluorescent
the HPS will give slightly more LUMENS PER WATT (this is how you get a real answer)

everything is nearly half price if you go to a local electrical store, not a box store


LED=hype
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Old 10-18-2012, 04:22 AM   #18 (permalink)
 
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Default Re: LED Grow Light

Check it out.................Kessil Leds..............

Kessil Lighting- The Spectral Revolution

Its a Dense Matrix stuff...................looks very nice product.............

And they have may spectral choices.................
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Old 10-18-2012, 04:28 PM   #19 (permalink)
 
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Default Re: LED Grow Light

Thanks for all the suggestions and wonderful links...but taking into account electricity usage, heat output, and initial investment I think I'll be using a T-5 fixture for now!

Did anyone weigh in on bottom heat?
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Old 10-19-2012, 09:33 AM   #20 (permalink)
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Default Re: LED Grow Light

EDIT
I really butchered this final draft.
The post was supposed to be a lot less vitriol.
I've been trying to cram the most info with the least words. Sometimes it doesn't sound right.
I'm going to take the winter off from bananas and write some tutorials on a couple subjects on which I can speak authoritatively. Some of the info here is lacking or scattered.
Hope this post didn't turn anyone off.

Quote:
Originally Posted by jmoore View Post
I think I'm having de ja vu...isn't this where Richard gives his sage like advice...
at the risk of sounding like a jerk
maybe Richard got tired of teaching + and - in his calculus class
This will be my final post on lights until I find a way to distill this complex subject. Maybe I'll make a ULTIMATE GUIDE post and just permalink.


it has become clear that people understand neither lumens per watt nor watts consumed
this is really simple math

if both lights A and B consume the same watts,
if light A makes 95 LPW and light B makes 105 LPW then light B is clearly more efficient and light A probably making more heat

simple

go to the local electrical store and buy
150HPS ballast $23
150HPS universal mounting bulb MEDIUM base $5-10
medium base socket $3
can you get a T5 for $35? NO

be sure to put those T5 light within a foot of the leaves.

this may be too complicated Inverse-square law - Wikipedia, the free encyclopedia
this is better
Rules for Perfect Lighting: Understanding The Inverse-Square Law

here is the meat

According to the law, the power of the light will be inversely proportional to the square of the distance. So if we take a distance of 2 and square it, we get 4, the inverse of which would be 1/4 or rather, a quarter of the original power – not half.

LIGHT INTENSITY AT 2FT IS 1/4 LIGHT INTENSITY AT 1FT

you must have these flouros nearly touching or you are wasting time and money PERIOD
HPS is more forgiving as a point source inside a cone reflector (but does not circumvent this law)

good luck with your lights
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Last edited by G.W. : 10-23-2012 at 11:39 PM.
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