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Just make sure the air is blown through the lights not sucked through as this avoids pulling in any unwanted smells if your not filtering the air for the lights.

Years ago when I made my own air cooled lights I had a pipe running through a bath full of water made cold using parts from a freezer. Now days you can just by a water cooled fan or use an ac unit.

You just need air cooled lights and if the temp is too warm hook the lights up to an ac to keep them cool. That way you can keep them close to the plants without burning them

Let me start by saying I have had many many years of experience growing cannabis and have thus far produced over 100 batches in several locations many at the same time, so believe me when I say there is very good reason not go for 600w sodium blubs you will get nowhere near the amount you can...