Cooltube Digital Grow Light

If you need to keep heat down to a minimum then the Cool-Tube Digital Grow Light offers one of the coolest HID lamp set-ups available.

The Cool-Tube is a fully-sealed reflector with a lamp mounted in the centre of the glass tube and open ends for ducting to be connected to. This allows air to be pushed (or pulled) over the lamp and remove heat before it builds up.

Combining this heat reducing design with a Maxibright Digilight ballast will help keep temperatures down to an even greater extent, as well as benefitting from the other advantages of a digital ballast.

Instead of using resistance in the ballast – which produces a lot of heat as a by-product – digital ballasts use microprocessors and in doing so avoid the current ‘spike’ which reduces wear on lamps and reflectors.

Available in 250W, 400W and 600W, we recommend using a lighting controller with all HID light ballasts. 250W and 400W kits are supplied with the 125mm Cool-Tube, 600W with the 150mm model.

All kits come with a two-year no quibble guarantee on the ballast and a one-year guarantee on the lamp and reflector.

For information on which fans to use with which Cool-Tubes, please see our FAQ below.  

**125mm version is OUT OF STOCK until further notice***