Cooltubes For Growing or LAW help?

[Madshotz]

please tell me if I should get A cool tube for 400w hps lights if i run one in a area will I be ok? lets talk about this

 

[Motor City Madman]

I use a cool tube with my 400 watt light, its the only way to go.

 

[Madshotz]

ok why do you use it tho what is the point

 

[The Hemp Goddess]

You use a cool tube so you can air cool your light to keep the heat down.