- -25%
![](https://static1.cultureindoor.com/51549/superplant-hps-400w-bulb-for-digital-ballast-growth-and-flowering.jpg)
It is ideal for growth (30% more blue) and flowering thanks to its broad spectrum.
The Sylvania Grolux 250W is a High Pressure Sodium bulb giving off 34 000 lumens. It is ideal for growth (30% more blue) and flowering thanks to its extended spectrum.
To be used only with a 250W ballast.
Not guaranteed
Not compatible with electronic ballasts