I'm trying to decide on replacing my 400w + 250w hid for either a 200w LED which is the power of 600w HID as advertised. Or a 300w LED that's supposed to be 1000w HID power. I have a 3x3 grow tent. (I think the tent is 6.5ft tall.
If I follow that 50w per square foot the 200w Led would suffice...