COOLTUBE Reflector Hood 125mm/490mm with Air Cooling

Advanced Air-Cooled Reflector for Heat Management

The Cooltube 125mm Air-Cooled Reflector represents a revolutionary approach to indoor growing lighting systems, specifically engineered to address the primary challenge of HPS and MH lighting - excessive heat generation. This innovative reflector housing features a tempered glass tube construction with integrated ventilation ports that allow direct air cooling of the lamp, dramatically reducing heat output in your growing space while maintaining maximum light transmission to your plants.

By isolating the heat source and providing active cooling, this system enables growers to position high-intensity discharge lamps significantly closer to their plants than traditional reflectors allow. This proximity increases light intensity exponentially while maintaining safe operating temperatures, resulting in stronger plant development and improved yields.

Innovative Design Features & Cooling Technology

The Cooltube design utilizes premium borosilicate glass construction that maintains optical clarity while withstanding the thermal stress of repeated heating and cooling cycles. The 125mm diameter provides optimal air flow velocity for efficient heat extraction while accommodating standard HPS and MH bulbs up to 1000W capacity.

• 125mm diameter ventilation system for optimal airflow and heat extraction
• High-grade borosilicate glass tube construction for maximum light transmission
• 480x125mm tube dimensions accommodate most standard HID bulbs
• Integrated reflector design maximizes light distribution and plant coverage
• Allows lamp positioning 12-18 inches closer to canopy than standard reflectors
• Compatible with inline ventilation fans from 4-inch to 6-inch diameter
• Easy bulb access and replacement without disturbing ventilation connections
• Reduces ambient grow room temperature by 10-15°F compared to standard reflectors

Heat Management Science

The physics behind the Cooltube design are straightforward yet highly effective. As air is drawn through the glass tube by an inline ventilation fan, it directly contacts the lamp surface, absorbing radiant heat before it can escape into the growing environment. This heated air is then exhausted outside the growing space, along with the majority of infrared radiation that would otherwise contribute to excessive ambient temperatures. The result is dramatically improved environmental control and the ability to run higher wattage lighting systems without overwhelming your climate control capabilities.

Installation and Ventilation Requirements

Proper installation of the Cooltube system requires integration with your ventilation infrastructure for optimal performance. The 125mm inlet and outlet ports connect directly to ducting systems, typically requiring a dedicated inline fan with capacity of 200-400 CFM depending on lamp wattage and ambient conditions. For best results, position the Cooltube as part of a dedicated cooling circuit separate from your primary room ventilation.

The system works most effectively when fresh, cool air is drawn from outside the growing space, passed through the tube to cool the lamp, and then exhausted directly outside without recirculating through the growing environment. This approach maximizes heat removal while maintaining negative pressure in the growing space for odor control. When properly installed with adequate airflow, growers can position 400W lamps as close as 8-12 inches from plant canopies, and 600-1000W lamps at 12-18 inches - distances that would cause severe heat stress with conventional reflectors.

Consider pairing this cooling system with our recommended NTS TT 200R Variable Speed Fan for optimal airflow control, and complement with professional HPS bulbs like the Philips Master SON-T PIA Green Power 600W for maximum performance.

Ideal Applications and Growing Benefits

The Cooltube 125mm system is particularly valuable for growers operating in space-constrained environments, warm climates, or situations where air conditioning costs make traditional HID cooling prohibitive. It's an excellent solution for basement grows, attic installations, closet conversions, and any indoor growing space where heat management is challenging.

This cooling system is especially beneficial for growers using high-intensity training techniques like SOG (Sea of Green) or LST (Low Stress Training) where maintaining close lamp proximity throughout the growth cycle is essential for even canopy development. The improved heat management also allows for extended photoperiods during vegetative growth without thermal stress, accelerating development times and improving overall plant health.

For larger growing operations, multiple Cooltube units can be connected in series to a single ventilation system, providing efficient cooling for entire flowering rooms while maintaining individual lamp positioning flexibility. This approach is particularly effective in commercial setups and dedicated growing facilities where maximizing light intensity per square foot directly impacts profitability.

Perfect for integration with quality growing environments like our PROBOX MASTER 120 grow tent systems, where precise environmental control is essential for optimal results.

Technical Specifications

For complete growing success, explore our Hydroponics for Beginners guide and discover the full range of Hydroponic and Indoor Growing solutions to complement your professional lighting system.