I was surfing YouTube the other night for reviews on some newer pepper varieties, and LED lights, since I want to switch to LED at some point. I came across several videos that tested LED vs T5 fixture grows and "Full Spectrum" LED vs Blue/Red LED fixture (mostly Red) grows. I know there are plenty of arguments going in every direction for every type of light, just wanted to bring attention to the cheaper versions of the blue/red (blurple) only colored LED fixtures since I see many people on here trying out some of the cheaper ones. It looks to me that full spectrum LED is the best overall, vs only red/blue.
The results were interesting.
Most notably, was the cheaper LED fixtures that were Purple in color (or Blurple, whatever you want to call it) with mostly Red LED's and lower wattage per sq ft, grew weaker plants. The height was similar to the T5 and Full spectrum (White LED) plants, but the stems on the plants grown under the purple colored LED's were softer, had larger node spacing, and the example plants (tomatoes) actually collapsed under their own weight, while the plants under the Full Spectrum "white" LED continued to grow upward with firm stems.
I think there is now a wave of Full Spectrum LED fixtures coming into the market that even have a bit of UV and IR light in them, so those are probably a better route to go, even with them being more expensive.
Here are the sets of videos I found. I just wanted to give anyone considering the cheaper blue/red led fixtures a heads up before wasting their money and time/season.
- This set was 4 part series and kind of long, over an hour for all 4 videos, but very informative and explains some basics of lighting before going on to show the grow results. Skip ahead in the videos if you just want to see the grow results. This is the set of videos from the test results mentioned above.
- Part 1 -
- Part 2 -
- Part 3 -
- Part 4 -
- This video is a grow with T5 vs again the cheaper Blue/Red LED fixtures
- And finally, this video series could be/likely shows biased results being that it's published by the light fixture company themselves, so take these ones with a grain of salt. Some of the info is just about light colors and heights above the canopy though so that part is what it is.
Edited by U)<now, 02 February 2018 - 05:01 PM.