diy ice box question



Ok this guy made this from pvc and 5 feet copper coil. This is supposedly a DIY icebox for 1 light. too hang this on every light in a garden (12) may be too much so what if we expanded on his idea and made a 12" x 12' pvc run coiled with 1" copper coil from end 2 end and exhausted 12 1k lights through. i can probably put one on the intake as well. what u guys think.
 
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