Rauber's simple 18/6 method boasts better growth per watt.

This method uses two timers..One for the blue (445nm and lower) and one for the red (660nm). Very simple IMO.

The blue timer stays on the whole 18 hours. The red timer cycles on and off every half hour.So you have red/blue then just blue then red/blue and so on. Also you start the red 660nm timer 15 mins after your blue timer starts.That schedule makes it so the red spectrum goes off 15 min before the 18 hours of blue goes off. This gives your plants 15 mins of blue 445nm and lower spectrum just before they go to bed . No 730nm spectrum is used in this veg method so no stretch is involved..

Now.... knowing that blue LED's (445nm and lower) creates a very compact plant structure and 660 doesn't cause stretch.. What you end up with is a very strong structured plant with excellent growth..

Sal will answer and make my post seem elementary...LOL:thumbsup:
Dogznova Reviewed by Dogznova on . HID Time factor manipulation I've been following the UV-B thread for a while. Cool stuff. Makes me want to get back into growing. But, what really gets me going is the Martian stuff and the light time factors for increasing tric production. I seems to me that, unless you've got a ton of cash for LED's or have alot invested in HPS setups already, it's really hard to get down to the magic 1.8 and decent yield. However, I have some ideas to get closer: Fluorescent Supplemental Lighting: http://kinoflow.com has HO Rating: 5