Thanks for the extra info. Definitely interested in that one. Do you have a watt meter? I'm curious if it's drawing 300w. Does it use CXB 3590?
This is from Victor...
Featuring top-bin CREE CXB3070 COB and monochrome XML2/XP-E2 that are powered by premium Meanwell drivers it pulls ~250w. The SES250 is essentially half of a SE450 that is stretched another 10" for maximum coverage. It will cover a 2'x4'@18", enabling you to expand into a 4'x4' by simply adding another one