Cooltube Glass + Adjust a Wings + Conversion Kit – Maximum Light Efficiency

The Cooltube Glass + Adjust a Wings + Conversion Kit is the definitive engineering solution for indoor growers who refuse to compromise between temperature control and light distribution. This hybrid system mounts the high-reflectivity wings of the Adjust-A-Wings Enforcer onto a borosilicate Cooltube, allowing you to extract the heat generated by the bulb directly while maximizing the light footprint over your canopy.

Is heat destroying your harvest potential?

Problem: You know the feeling. You want to push your plants to the limit with powerful HPS lights, but the temperature in your grow tent spikes, creating hotspots. Standard reflectors trap heat, forcing you to raise the lamp higher, which reduces the lumens your plants actually receive. It’s a losing battle: either you burn the tips of your plants, or you get fluffy, airy buds due to lack of light intensity.

Agitation: Continuing with a basic setup in a warm climate or a small space is a recipe for disaster. Heat stress stops metabolic activity, destroys terpenes, and invites pests like spider mites. Plus, you end up spending a fortune on air conditioning just to keep the room livable. Every degree of excess heat is grams lost from your final jar.

Solution: This Conversion Kit changes the game. By enclosing the bulb in the Cooltube, you actively suck the heat out before it enters the room. Simultaneously, the Adjust-A-Wings reflector spreads that light evenly across the crop, eliminating shadows and hotspots. It allows you to bring the light closer than ever before without burning a single leaf.

Quick spec sheet of the product

• Product Type: Hybrid Air-Cooled Reflector Kit.
• Components: Cooltube Glass (Borosilicate) + Adjust-A-Wings Enforcer Reflector (Wings) + Assembly Hardware.
• Available Diameters: 125 mm (5 inches) or 150 mm (6 inches).
• Compatibility: Optimized for 400W and 600W HPS/MH lamps.
• Reflector Material: High-reflectivity flexible aluminum.
• Socket: Ceramic E40 (included in the Cooltube).
• Function: Active heat removal + Adjustable light spread.

Key advantages over more basic options

Most growers have to choose between a standard Cooltube (good cooling, poor spread) or a standard Wing reflector (great spread, high heat). This kit eliminates that choice, giving you the best of both worlds in one robust unit.

• Superior Light Spread: Unlike a standard Cooltube which has a very narrow light footprint, the added wings widen the coverage area significantly, allowing you to cover up to 1.2m x 1.2m effectively.
• Active Cooling: By connecting it to your Air Extraction System, you remove up to 40-50% of the heat generated by the bulb at the source.
• Vertical Space Saver: Because it runs cooler, you can lower the lamp closer to the plants, effectively increasing the penetration of light into the lower branches.
• Versatility: The wings are adjustable, allowing you to mimic seasonal changes or focus light intensity where it's needed most.

Real benefits you’re going to notice

The first thing you will notice is the climate stability. Your thermometer will stop spiking, and your humidity levels will be easier to maintain. This stability translates directly into plant health; they will drink more, eat more, and grow faster because they aren't fighting heat stress.

Secondly, the yield per watt increases. Since you can place the light 20-30 cm closer to the canopy than with a regular reflector, the light intensity (PPFD) hitting your buds is exponentially higher. This results in rock-hard, dense flowers rather than the airy "popcorn" buds often found in hot grow rooms.

Step-by-step usage / growing guide

1. Assembly: Carefully attach the metal brackets of the conversion kit to the Cooltube. Do not overtighten screws against the glass to avoid cracking.
2. Wing Installation: Mount the Adjust-A-Wings sheets onto the brackets. Adjust the tension cables to set your desired wing width.
3. Bulb Setup: Screw your HPS or MH lamp into the E40 socket inside the tube. Ensure it is clean and free of fingerprints.
4. Hanging: Suspend the unit in your Grow tents using pulleys. Ensure it is centered.
5. Ventilation Connection: Connect aluminum ducting to both sides of the Cooltube. One side should lead to your carbon filter/intake, and the other to the extractor fan.
6. Testing: Turn on the extractor first, then the light. Check for air leaks with your hand and ensure air is flowing through the tube.

Frequently Asked Questions

Does this kit include the bulb?

No, this kit includes the reflector system (Tube, Wings, and hardware). You need to purchase your 400W or 600W HPS/MH bulb separately.

Which size should I choose, 125mm or 150mm?

If you are using a 400W lamp, the 125mm is usually sufficient. For 600W lamps, we highly recommend the 150mm version to ensure maximum airflow and cooling efficiency.

Can I use this with LED lights?

This system is specifically designed for High-Pressure Sodium (HPS) and Metal Halide (MH) lamps which generate significant heat. Most LED bars do not fit inside a Cooltube.

How much closer can I get the light to the plants?

With proper airflow running through the tube, you can typically reduce the distance by 30% to 50% compared to an open reflector, often getting as close as 20-30cm from the tops depending on the wattage.

Personal Experience of Pevgrow’s CEO (Alan)

I've always been a fan of the Adjust-A-Wings for the way they mimic natural sunlight spread, but living in Spain, the summer heat used to force me to shut down my indoor grows. When I first combined the Enforcer wings with a Cooltube using this kit, it was a total game-changer. I could keep running 600W HPS bulbs even in July without my tent turning into an oven.

A pro tip from my experience: be very gentle when assembling the metal brackets around the glass tube. Borosilicate is tough against heat, but it doesn't like pressure points. Once it's set up, though, it's solid. I also recommend cleaning the glass inside and out between every harvest; dust buildup on the glass can block a surprising amount of lumens.