600w Sylvania Grolux Dual Spectrum Canadian Xpress Secure all connections with duct

Secure all connections with duct clamps or tape for an airtight seal

Contents: Two heavy-duty hanging brackets for overhead mounting

PK ratio: 13–14 (phosphorus–potassium)

Fully water-soluble for easy mixing into a feed solution

Feeding hard but uptake still lagging

600w Sylvania Grolux Dual Spectrum Canadian Xpress Secure all connections with ductOne Bulb for Veg and Flower The 600W Sylvania Grolux Dual Spectrum is a high pressure sodium lamp that blends red and blue wavelengths in a single bulb, delivering around 90,000 lumens from a 600W E40 cap. It gives growers who would rather not swap bulbs between stages a balanced spectrum that supports vegetative structure and then carries plants through flowering from the same fitting. Need one lamp that covers the whole grow cycle? Switching bulbs