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 tubes in specific ranges. 625nm 420nm 450nm etc.

Desisti (couldn't get the site to work) available here:bh photo - Google Search
Also makes tubes in red and blue in both HO and regular flavors.

Buy two cheap walmart shoplights. Remove ballast from one and add it to the other one ballast per bulb should let you run the HO lights without spending a fortune. There are a lot of possible ways to do this. I've built fixtures like this in the past. I don't want to get too technical right now about the wiring. MIght post pics later.

If you have an overkill HID set up. Anodized reflectors. Use red or blue reflectors to help filter out the excess spectrum. I think using filters would cost too much light but having the reflective output modified couldn't hurt. I've run two 400w hps and two 4'shoplights with 2700k&3200k bulbs along with 6500k&10,000k cfls in a 2'x5' grow with staggered timing to control heat and to change angle of penetration (exercise program) with good results.

Just a couple things running through my head. Thoughts?
scott9116 Reviewed by scott9116 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