Awesome! Very very nice work! I am highly impressed!
You say it is getting hot in there. Tell me what your temps are and what you use for ventalation. You should have an exhaust fan at the top to deal with the heat, for instance a 4 inch vortex. Low in the grow, near the bottom, you need for 4 in heat exhaust double that measure in cold air passive intake. So that would be 8 in., 2 four inch holes will work. With a light blocker something, which you can find on the site. With your knowledge you probably know all this, but I am just adding this to help.
I will come back to see what you write.
Peace
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