Grolux
Grolux lamps from the Bristol shop: the dual-spectrum HPS lamp that covers growth and flowering from one lamp.
In StockGrolux
£18.85
About Grolux
Why Grolux
A standard HPS is red-heavy and best for flower; Grolux adds blue to the spectrum so plants grow shorter and leafier under it in the vegetative weeks and still flower well. One lamp for the whole cycle, on any HPS ballast.
Related
Ballasts, reflectors and the other lamps are under HID Lighting.