The MASTER Agro is a high-output 400W HPS lamp tuned specifically for the flowering phase. Delivers 55,000 lumens at a warm 2000K, it floods your canopy with a red-rich spectrum that supports dense bud formation, enhanced resin production, and tight internodal spacing — with a touch of blue that prevents stretch during early flower to maintain structure. It fits seamlessly with standard HPS fixtures, with radiant heat ideal for both grow tents and sealed rooms, perfect for both experienced home growers and commercial operators leveling up their flower setup. With a rated lifespan of over 24,000 hours, it delivers consistent, long-term reliability. For a fuller spectrum ideal for larger grows, check out the Master GreenPower CG T 400 by Philips. If you’re looking for lighting for seedlings or vegging in compact spaces, the highly rated MasterColor CDM-T 70W 942 is known for its proven early-stage performance.
