here you go. This a 'sump pump' switch...Now Z, I am using this in another..."cool hydro toys" thread I am doing; So when you see it twice...don't cuss me out.lol

junior super single pump switch...I drew somw res' on the pics to show you how it works...I just got this from...truedeals, an ebay store...good people and they have plenty of these...15 bucks inc. shipping...hope this helps.lw
latewood Reviewed by latewood on . C02 cooling effect on grow closet Would a steady flow of c02 from a large tank during light hours cool down a small grow room about 15 square ft enough that I could bring a 400 watt hps closer to the plants? Runester Rating: 5