Depends on the LED. I custom made an LED setup for my reef tank. Those probably would get hot enough. I have to have a actively cooled aluminum heatsink.
The real advantage of LEDs in your case is the ability to very efficiently and effectively produce specific wavelengths of light without wasting energy producing wavelength the plant doesn't utilize
I've seen some custom jobs, they do get pretty hot, especially if you have a fan fail. These are simply the low wattage, off-the-shelf ones. The 14w ones run even cooler.
Well the issue there is lower power = less energy transferred to the plant. The reason the high power LEDs are used is because they work better. I use these low power ones for growing actual grass as well as herbs/garlic/etc in my house and they work well
Thanks, I'm Fully Aware of Power Differences
Again, this is simply a 17w, off the shelf, LOW power LED. The 'Grow' is a simple seed run, nothing for production/quality purposes. I'm crossing a few strains.
Low Power is Fine
Though it's low power, it's perfectly capable of flowering out cannabis, within the 12" dia/12" distance restrictions. It also cost about $12 for the LED. :)
The one I linked below should be ideal then @14 watts. $26 though. I have 10 or so of them and can tell you they don't produce any heat I can feel with my hands
So; "your crossing a few strains", how would cannabis crossed with crack cocaine or methamphetamine's sell ? ? ?
Sales would be brisk in socially disrupted places like Ferguson Missouri and especially a lot of a super hybrid Cannabis crosses with PCP : )
/ hugz ; )
Challenges like that often bring out the adventurous entrepreneurial skills in most people : )
@crok I'm crossing strains of cannabis, not genetically modifying cannabis to produce adderal (meth), ritalin (cocaine) or pcp. Sounds like a crack pipe dream. I don't do drugs, not interested in producing them.
@hunterisgreat possibly, I can get 4 14w lamps for $26. Did you see my other post on the CFL/LED write up thread on icmag? The off-the shelf lamps I'm using are also a fuller spectrum, closer to CFL output.