Hi folks,

I'm new in LED growing and got only basic growing knowledge, so maybe I can get some helpful comments here.

History:

- First I started with 54 High-Power LED's (6 UV, 30 Red and 18 Royal Blue) in a little growroom (enough space for Bonsai ;-) ; only as an experiment).
Result: The plant growing speed was very slow :| . My reference plant on my balcony grows faster and higher.

- In the second step I've added some Luxeon LED's
Result: Wow - the growing speed increases potentially. The mass of the plant is now greater as them of my reference plant. Additionally it got more and bigger bastard brachnes!

- Now in my third step I use pulsed light (since two days). My current problem is primilary the temperature. With the non-pulsed Luxeons it was 28 degrees, now only 22. Will this be a problem? Without the fan (used to cool the Luxeons, which isn't needed with my pulse frequence) the tempereature is 26 degreed (optimal), but the humidness is about 70-80 per cent (50 with fan).

Have anyone made experience with pulsed lights. Are there really better results in growing? What frequencies and pulse-on/off times are you using?

What are you thinking about the healthiness of my plant (see attached pictures)?

What are you thinking about my project?

Do I really need a CO2-reactor to speed up growing?

In my opinion, growing with LED's is really possible, but you need a lot of them or Luxeons, but you can save a lot of costs for electricity. And the life time of LED's is much longer then of HID's, especially if you are using pulsed light (not overdrived).