im sure it would run cool but think it is probably not that great and the light having to pass through 2 pieces of glass and water is really going to rob alot of lumens.
bejay Reviewed by bejay on . Water Cooled Cool Tube I just saw a water cooled cooltube on ebay, claims to take 93% of the heat from a 1000w bulb. Doesn't need any special venting or fans, just a water pump. $375 though, ouch! Wonder if it works? Here's the link: eBay: Water Cooled Grow Light (item 220109252495 end time May-14-07 06:06:20 PDT) I am in no way affiliated with or even know this person. Rating: 5