SeaHawk 150mm cool tubeCool Tube Reflectors are able to lower temperatures in the growing environment by up to 10 degrees. By joining one or more cool tubes together with 150mm ducting and a fan, you can blow most of the hot air created by lighting straight out of the growing environment. The use of Cooltubes allows you to place your globes much closer to your plants without any burning. This in turn increases lumen exposure, resulting in much larger yields. They are also