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Good LED Lights for Terrariums?


I'd like to buy cheaply or make a LED light for a terrarium cover, I'd like for it to be something good for the plants, but since the whole thing is supposed to be a display piece, the red/blue plant-lights aren't really going to cut it, I want it to be visually close to white light. (If that means some 'wasted' light in the green part of the spectrum, then so be it.)   Any suggestions?

Some white LEDs seem to at least roughly cover the needed spectrum, if in the wrong proportions, but I'm not sure if that'll do it for me.

I'd appreciate advice from anyone who's done a project like this.  Thanks!

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iceng3 years ago
Use only clear LEDs ie ONE color LEDs.
The RGB kind which gives a POV light of any color does not work for plants.
As far as what frequency / color off of the web suggests
32 of 660 nm RED LED and four of 450 nm BLUE LED to make a
hydroponic Lamp LED GROW LIGHTing system.

A
Specifically:
http://www.farnell.com/datasheets/1305819.pdf

VRAndy (author)  steveastrouk3 years ago
Thanks, this does look like what I need. I'm going to order a couple now and see what they're like.
VRAndy (author)  iceng3 years ago
Sure I figured that part out on my own, but, like I said, that doesn't help my primary goal of being a nice visual display. (Plant growth serves that goal, not supersedes it.)

My goal here is not to maximize my harvest of some vegetable, it's to keep plants from dieing in my dimly lit apartment.

I ask the question because I'm worried that standard white LED lights won't do ANYTHING to sustain the plants if their spectrums don't match up the way the plants need.
I was wondering about that. The Cree warm whites though seemed to have a spectral output that was very strong around the wavelengths you've highlighted.

Steve
iceng3 years ago
This site where I got my count and color info first.
Then here is a panel that uses a ratio of 3 Red to 1 Blue. . . . . .  . .  A
GrowLED13.jpg
VRAndy (author)  iceng3 years ago
Right, but that doesn't really answer my question.

Information abounds if you want to make a plant-light that's an eye-hurting shade of purple. But these plants exist purely to look nice, and they're not going to look nice if they're lit by one of these.

My question is how to buy or make a plant-friendly LED fixture that looks like natural light.
iceng VRAndy3 years ago
Steve has a Cree warm white LED that he likes in this thread.
Steve said it had the grow colors distribution and should
let you see the natural colors you seek.  . . . . .  A
Light Spectrum and Plant Growth.png
j-rae3 years ago
take a look at Illumitex. They make an LED array specifically for horticulture - specializing in urban greenhouse applications:

http://illumitex.com/horticulture-lighting.php

keydogstony3 years ago
I would recommend a LED Light Strip. Very inexpensive and WATERPROOF!
Like this one.
Nothing LIKE bright enough though ;-)
The ones I've looked at for a project of my own are peaking in the red and blue anyway. Try one for a few weeks, before you commit to any. THe ones I've seen are Cree and give off 1000lm.

Steve