Maxibright 315w Daylight CMH/CDM Ballast

Stable, efficient power for 315W CMH lamps

The Maxibright 315W Daylight CMH/CDM Ballast is a compact digital ballast built to drive 315W ceramic metal halide lamps correctly, including Philips 315W Daylight and Agro CMH lamps. Run the right ballast and CMH delivers a sun-like full spectrum with excellent PAR output per watt; run the wrong one and you lose efficiency and lamp life. Its silent, lightweight design suits grow tents and grow rooms where low-noise, reliable kit matters.

Key Benefits

• Digital ballast technology for stable, efficient lamp performance across the whole grow
• Drives Philips Daylight and Agro 315W CMH lamps correctly for full spectrum output
• Excellent PAR output per watt for efficient vegetative growth and productive flowering
• Silent, lightweight and compact for flexible installation in tents and grow rooms
• Soft start and end-of-lamp-life detection to protect the lamp and extend its life
• Short circuit, thermal protection and automatic reset for safe, dependable running

Why the wrong ballast means slow growth and short lamp life

Incompatible or poorly built ballasts reduce lamp efficiency, distort the light spectrum and shorten lamp lifespan, which shows up as slow growth, weak plant structure and lower yields. This digital ballast runs Philips CMH lamps at the correct frequency and power output, holding intensity consistent across the canopy so plants receive the full daylight spectrum they need for strong veg, better nutrient uptake and healthy flowering.

How to Use

1. Place the ballast in a well-ventilated area, inside or outside the grow room
2. Connect a compatible 315W CMH reflector and lamp using the appropriate leads
3. Ensure the lamp is installed correctly in the reflector socket
4. Connect the ballast to a suitable power supply
5. On first use, run the lamp continuously for at least 15 minutes to stabilise the internal metals
6. Use a timer to keep a consistent light cycle through veg and flowering