What is the ProGrow 600W SE HPS Lamp and what spectrum does it produce?
The ProGrow 600W SE HPS Lamp is a single-ended high-pressure sodium bulb tuned for high output, often marketed as 620W. It produces a warm, red-dominant spectrum (~2000K), ideal for flowering and fruiting. While it can run through the full grow cycle, it’s best suited for bloom stages.
What makes the ProGrow 600W SE HPS Lamp different from cheaper HPS bulbs?
It uses upgraded internal components like extruded ceramic arc tubes and monolithic construction for better durability, reduced shadowing, and improved light transmission. Features like low-iron glass and digital ballast tuning also enhance performance and lifespan.
What ballasts are compatible with the ProGrow 600W SE HPS Lamp?
This lamp is designed for use with 600W digital ballasts and works best at full power. It also runs on magnetic ballasts, though digital is preferred. Avoid using it on 400W or 1000W ballasts. Boost/super lumen modes are possible but may reduce bulb lifespan.
What fixtures and reflectors work with the ProGrow 600W SE HPS Lamp?
It fits E40 sockets and is compatible with most single-ended HPS reflectors, including open, enclosed, and air-cooled hoods. It also works in vertical or light mover setups if heat and spacing are properly managed.
How do I install the ProGrow 600W SE HPS Lamp safely?
Turn power off, let fixtures cool, screw the bulb into the E40 socket securely (not overly tight), and avoid touching the glass. If you do, wipe with isopropyl alcohol. Expect a few minutes of warm-up before full brightness.
How far should I hang the ProGrow 600W SE HPS Lamp above my plants?
Start with a higher placement and lower it gradually while monitoring plant response. Signs it's too close include leaf bleaching, curled edges, or “tacoing.” Adjust based on canopy heat and airflow.
How much heat does the ProGrow 600W SE HPS Lamp produce?
It generates significant heat compared to LEDs. Use strong extraction, and consider an air-cooled hood if your temps climb. It’s ideal for tent sizes around 1m x 1m, and can actually help during winter grows. Running lights at night can also reduce ambient heat issues.
Is the ProGrow 600W SE HPS Lamp suitable for all plant stages?
It can be used from seed to harvest, but its red-heavy spectrum is optimized for flowering. For veg, you may see stretchier growth. It works well for tomatoes, chillies, and CO₂ setups, but go easy on clones or seedlings—use height and dimming if possible.
How long does the ProGrow 600W SE HPS Lamp last, and when should I replace it?
Most growers replace HPS lamps every 6–12 months. Signs it's time include dim output, longer flower times, weak density, colour shift, flickering, or blackening inside the arc tube. Even if it still lights up, performance may be dropping.
Why is my ProGrow 600W SE HPS Lamp flickering or shutting off?
Flickering often points to an aging bulb, loose connection, or ballast mismatch. Shutoffs may result from overheating, poor ventilation, or a failing bulb. Swap the lamp first—it’s the simplest fix—and check your cooling setup.
Can I use a household timer with the ProGrow 600W SE HPS Lamp?
Yes, but only if it’s a heavy-duty timer rated for HID loads. For setups with multiple lights, a contactor is recommended. Avoid cheap extension leads or power boards—they can overheat or fail under HID startup loads.
Is the ProGrow 600W SE HPS Lamp energy efficient?
It’s less efficient than high-end LEDs but offers strong intensity for its cost. While it won’t automatically outperform LEDs, it can yield great results in a well-ventilated, dialled-in grow space with good canopy management.
Is it safe to use the ProGrow 600W SE HPS Lamp in a grow tent?
Yes—as long as heat, ventilation, and electrical safety are handled. Keep ballasts and connections dry, use proper airflow, and avoid placing the lamp too close to plants or reflective surfaces without cooling.
What’s the best ventilation setup for this lamp?
A strong extraction system, good passive or active intake, and internal air circulation are key. An air-cooled hood helps control canopy temps. HPS heat can lower humidity slightly, but balance with environment control and VPD targets.
Should I wear eye protection under HPS lighting?
Yes—prolonged exposure to intense HPS light can cause eye fatigue. If you spend a lot of time under the lamp, consider using grow room glasses that reduce glare and help preserve colour accuracy.
