I test and evaluate the BUDTECH V8 COB LED grow light. It consumes 386 watts and covers a 4ft x 2ft or 120cm x 60cm space with an average PAR of 909 µmols/ m ²/ sec which is a really high performance level. The system effectiveness is 1.7 µmols/ watt usable PPF per watt which is not as high as most led bar type lights. However it is well constructed and uses…