Maxibright Daylight Digital 315W Ballast

Maxibright Daylight Digital 315W CMH Ballast

The ballast purpose-built to drive 315W CDM (CMH) lamps — converts mains electricity into the specific low-frequency square-wave output CMH lamps need to run efficiently and last long. Compact, silent, lightweight, with auto-reset and soft-start technology. The right partner for any Maxibright 315W CMH lamp.

Why growers choose the Daylight Digital 315W Ballast:

• Matched to 315W CDM lamps — proper CMH-specific drive, not a repurposed HPS ballast
• Low-frequency square-wave output — the technically correct drive for CMH, extends lamp life significantly
• Auto-reset technology — recovers automatically from power cuts or brief interruptions
• Soft-start ignition — gentler on the lamp filament, longer overall lifespan
• Silent running — no audible hum even in a quiet grow room
• Compact and lightweight — easy to wall-mount or tuck onto a control shelf

Who it's not for:

Only drives 315W CDM/CMH lamps — will not work with HPS, MH, or LED fixtures. For those, use the correct ballast type (CMH to HPS switch isn't safe in any direction). If you're buying a complete kit, the Daylight 315 Kits include a matched lamp + ballast + reflector.

See it running in our Stone shop. Drop by Unit 24, Emerald Way, Stone Business Park (ST15 0SR) to see this fixture set up, or call us on 01785 556355 (Mon–Fri, 10am–5pm) to talk through whether it's the right choice for your tent size and grow style. In stock now with 24hr UK dispatch, or choose click & collect at checkout.