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I'm surprised there isn't more info on here, but some of the comments were so amusing I almost prefer that. Anyhow, here's a link that talks about several studies proving that sound works to improve yield and also deter pests. http://www.smilinggardener.com/plants/music-and-plants Google those...

First I had heard of the Emerson enhancement effect... ty for that. That helps to validate the use of a far red LED according to photosynthesis and not just "promotes flowering" like some patents suggest. Good read on google. Also, does anyone play music for your plants to help them grow...

Grams per watt is trivial. Example: Tom: "Whoa man I got 1 gram/watt from that anylighthere, its badass!" Jim: "Wow, I only got .5 from the same light, you da man!" Tom: "Don't feel bad bro, my plants were larger because I vegged longer, so of course I got more bud than you." Jim: "But I feel...

Sorry to see the LED r not working for you (again)... time to go back to HPS and A/C if you want good buds... ;)

Eh, idgaf about ridicule, but its common sense. You can veg for 3 months under 1k HPS and you'll get more weight than if you vegged less (say 1 month for comparison) so g/w means nothing, but you could break out the calculator and figure your g/Wh and get exact # based upon how much electricity...

I want to go on record, g/w should not be used at all unless comparing one grow to another with exact light cycle, etc. We should use g/Wh for a true comparison of energy use vs. results.

It's interesting especially about the uvb info... care to share a link? Also, 610(?-don't recall) I think has special note, check out U.S. patent 6921182. Thanks for sharing good info

Yeah use CFL, just make sure to get good strength and ones designed for plants or high output ones if possible, not just based on K rating, k? ;) Once you can afford it (keep saving on top of what ya got!) get a good LED, but in another 6 months your choice will be even easier. Blackstar is...

Hehe, there are dozens of companies that could easily be carbon copies of each other on alibaba ("shenzen yournamehere inc, ltd."), but this is the only one I found with those spectrums, so I'm not sure who they are copying except maybe Solaroasis. Of the ones available, 90+% seem to be just...

Fantastic pics Stoney! Curious, have you tried topping? I've got a main stalk split to 64+ colas and its ~18-24" tall. Might work well for ya.

I get emails from alibaba, and had one come across that led me to this company (Wayet lighting) which is using the spectrum very similar to Solaroasis' patents, "perfect" blend IMO: Full spectrum: Red 660nm + 630nm Blue 475nm + 430nm Orange 615nm...

Good read: http://lampar.webs.com/High-power20LEDs_for_plant_cultivation_study.pdf

You may want to peek at the conversation a bit back, or google it yourself, but solaroasis has some patents you can follow for a roadmap of either 3 or 5 spectrum with info on proportion, etc. They also used 15 and 30 degree angles, citing better light penetration, unless you plan on short...

This is from the patent: Abstract A first set of orange LEDs with a peak wavelength emission of about 612 nanometers, a second set of red light emitting LEDs with a peak wavelength of about 660 nanometers, and blue light LEDs. Two beam spreads, 15.degree. and 30.degree., were...

I found this post from 2004 on candlepower forums which relates to the discussion on wattage misadvertisement: "Watts is just a measure of energy dissipation. I think most people relate watts to light because numerous residential & commercial light bulbs are sold on the basis of wattage. Even...

@Spuzzum if you're building your own, take a look back a few pages at links for the solaroasis patents for the nm they use. Also, I think maybe no one read that before-- it had some great info about light penetration vs. angle.

Your leaves will grow fat from the intense light, but you may be correct!

The fans blow with enough force that recirculation should not be a concern. They could be upgraded further if desires though. Anything over ~30 CFM should be an improvement. You can get an 80mm that blows over 80 CFM but its kinda loud -- 56db (Vantec brand).

Ah, that makes sense, thanks! Agreed on the mixing, again just based on observation of BS240. A purple dot is better than a blue dot. Here's a new video of a ~50W shootoff in progress, peppers: http://urbanhydro.org/2011/02/50w-penetrator-vs-glow-panel-45-start/

I can't recall if I brought this up back when either, but has anyone seen the SolarOasis Grow-bar or grobar thing? looks nice but the cost is crazy. Here's a link with a comment post (3rd down, Burton Rosenburger) that puts out some nice reading material regarding these, especially from a...