Sylvania Grolux 600W Sodium HPS Lamp Dual Spectrum Light Bulb
600w Grolux dual spectrum lamp. Perfect for veg growth and flowering.
2 for £23.95 each
3 for £22.95 each
5 for £21.95 each
10 for £20.95 each
The Grolux was the first dual spectrum spectrum bulb available on the market and it is made by Sylvania
These bulbs can only be used with a 600w ballast