my room will b a 9x4 out door shed with lights . will i need fans for air in and out ? its not fully seald has air that can pass through the under side of the roof. what can i do about smell ? how many plants should i do in that space ? have a 400 w mh/hps and two 90w led tri band ufos. thanks for any help my first grow.
new grow room help
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