ideally u want 50w per sqare foot so u have plenty of light now u just have to worry about heat...its gonna get hot in there so keep a few fans circulating the air...

u can stick as many plants as u can fit just make sure u have enough space for them
dryst Reviewed by dryst on . How many plants can I fit with 1x400watt Metal Halide light? The space is 3ft x 2ft.. How many plants can I fit in this space if under one 400Watt MH light? I'm planting for yield and not really care about quality. Oh another question.. How much can I yield under this light? Thanks in advance. Rating: 5