500 Watt LED would do better, I know I recently sold my 2x400watts knowing I would never ever use them again. duuno where you live but I had to upgrade vfrom 4'' to 6'' inline fan to run the 2 lights...also I had to use cold fresh air from outside... unless you have cool tube I guess.. but yeah if you wanna run both lights dont fuck around with 4'' , go 6''++