| Stogger LED | 
|---|
| Morphologic faster rooting and stronger vegetative growth | 
| Higher light level possible, shorter treatment | 
| Early season light treatment start possible | 
| Initial investment payback period < 3 years | 
| Energy efficient. Limited main connection necessary | 
| 70% light efficiency | 
| Energy efficiency of 3.5 µmol/J | 
| 10 years warranty, maintenance free | 
| Excellent even light distribution for homogenic growth | 
| State-of-the-art technology; changeable led engines | 
| Dynamic lighting: soft start/stop, like the sun | 
| HPS SON-T | 
|---|
| Turf morphology not steerable by spectrum | 
| Higher light level not possible, because of tipburn | 
| Limited initial investment | 
| Requires industrial main connection & feed lines | 
| 35% light efficiency | 
| Energy efficiency of 2.1 µmol/J | 
| Replace lamps every 3 years, maintenance required | 
| Less effective optics; more uneven light distribution | 
| End of life technology | 
| Static lighting: on/off | 
| Creates a lot of heat: high inefficiency and risk of tipburn | 

 Learn more about retrofitting to LED
Learn more about retrofitting to LED