If you have been paying attention to new advancements in grow lighting technology, chances are you’ve seen references to “COB” lighting. COB – which stands for “Chip-on-Board” – is a recent development in LED packaging technology where multiple LED chips are mounted directly onto a single substrate to form a singular module. Due to their many advantages over standard lighting options, full spectrum COB LED grow lights are creating a buzz within the hydroponics and cannabis growing communities. Let’s start by looking at some of these advantages, and then review the best COB LED grow lights on the market today.