Hi

Is it worth putting the air pump in a position outside the grow room and running longer airlines so that it intakes cold air thus helping to cool the water in bubblers ?

Or is it waste of time ?? Anyone measured the difference ???

Cheers

I would keep the pump inside the tent.there have been cases of nastys brought thru the airline and into the feed.that's why a lot of people use a second nute pump to airate there nutrients rather than a air pump.My grow room gets disinfected each week so in theory the grow room is probably cleaner than outside the growroom so it stays inside.