CXA3070 + TE holder Introduction and COB advantage: I have posted about other LED lighting options for plant growing. The high-efficiency T8-LEDs from Sunritek are fairly impressive. Philips XF-3535L involves a bit more work, but it is very easy to assemble. Here I'm showing how I assemble a Chip-on-board (COB) based project. It is the workhorse and the performance leader of DIY-LED world at this moment. From my point of view, the 3 advantages of COB LEDs are the easy assembly, high efficiency, and affordable cost. You can make a highly efficient fixture with the individual LEDs, but generally it ends up costing much more than COB based units. I think the majority of DIY LED people have migrated to use COB technology now. Some of the grow light makers are finally catching up and started to use this technology. If you prefer a pre-made COB grow lights (but you need to pay at least 2x of the DIY cost), following companies offer COB...
Plants, Orchids, and Life in North