We are going to do a 2 tent grow this time around. One 4x4 and a 5x5 tent that will allow us to do a scrog in the 4x4 for yield and the 5x5 for our ~ Sativas. Checking out some new lights from HLG and King Bright that we are already seeing some differences. Very low stretch compared to our last cmh 600w lights(and low heat) - we went with the HLG 550 V2 RSPEC and happy so far.