Your Thoughts on DIY Lightspikes (grow lights)

I picked up my usual reading material........ and came across an article in this month's popsci mag. Hubby and I are stoked about making it. Just wanted all the green thumbs opinions about making this.

here is the link to the page with all the destructions & what you need to buy to make:

http://www.popsci.com/lightspikes

Please leave input or I won't waste my time or money
Peace

May be good for houseplants, but definitely not weed in my opinion. LED's just aren't there yet.