Somewhere in Amsterdam I developed a Led panel system for growing Marijuana with LED's, these webpages show you the different tests I did with just a few plants in a 60 Watt, 40 by 60 cm system. These panels are the very first available that can actually:
Please note that this site is for educational purposes only.
Growing Marijuana is prohibited in a lot of countries. Don't grow Marijuana unless you are sure it is legal to do so.
Finally, You can purchase the LED Grow panels I developed
October 5, the box is now completely filled with plants, the light has been switched to flowering mode, maximum power. Please note the distance to canopy is kept at a constant 30 cm, it gives a very good combination of lightspread and light reception of the plants. Closer to the plants would give too little light in the corners, a bigger distance would lead to more losses to the sides.
September 27, Switched to 12/24 hours light today, the panel is still into vegging mode, the theoretical end of flowering is November 29. Please note these plants are just 15 cm, 6"", high, so I expect to get 9 solid candles of bud.
September 21, almost ready to switch to flowering, the plants are very healthy.
September 11, the transplanted seedlings are beginning to grow in their new (and final) home. In the center pot you can see the Spectrum meter, it is a very useful tool, it's data is sent to an Ipad by a bluetooth connection. The panel is now about 30 cm above the pots and the vegging setting is selected, the spectrum is shown below, please note the high amount of blue light.
Today I'm starting a new Set-up, a renewed test of the very popular 150 Watt panel, now with 9 SkunkXL plants, just like in Set-up 17
Here is the spectrum of the 150 watt in full flowering setting, compared to the absorption spectrum of plants. You can see the output of the 150 watt starts at about 400 nM with a tiny bit of UV and ranges all the way to 720 nM. The two big peaks at 450 and 640 nM do most of the work, where the conversion into uMols is optimal efficient.
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