This colour adjusted Sylvania Grolux lamp offers a broader spectrum of light making it an ideal lamp for both the vegetative and flowering stages. The Grolux Lamps contain a patented arc tube which delivers the highest photosynthetic efficiency of any lamp in the world.

Performance maintained at an exceptional level due to improved structure of the outer bulb. Optimised for the highest Phytolumens or PAR output. Grolux light spectrum maximises red output essential for plant growth. Industry leading lumen maintenance of 95% at the end of life.

• Patented arc tube delivers highest photosynthetic efficiency of any lamp in the world
• Performance maintained at an exceptional level due to improved structure of outer bulb
• Optimised for the highest Phytolumens or PAR output
• GroLux light spectrum maximises red output essential for plant growth
• Industry leading lumen maintenance of 95% at the end of life

Free delivery on orders over £60*
- UK Mainland only

Standard Delivery £4.95
- Heavy / Large item surcharge £2 per item
- 1-3 Days**
- UK Mainland only
Express Delivery £8.95*
- Next Working Day**
- UK Mainland only
Scottish Highlands £15.95*
- 2-5 Days**

*Can not be used with Heavy / Large items
**If ordered before 2pm cut off

Please See Delivery and Returns page for more details.