The difference is with LED you actually have a choice and then choose for suboptimal.
Never seen those mercury vapor lamps in the streets, these are definitely leds. In urban areas they are white and bright as fuck. Can be hurtful on the eyes, this pic is actually from an article where people complained about the brightness:
View attachment 3636810
These will be blurple some day:
View attachment 3636811
Many already are:
View attachment 3636814
View attachment 3636817
This was a test run that made the news because people were like wtf is all that purple light...
View attachment 3636822
View attachment 3636821
View attachment 3636825
It's actually from a hybrid setup though no idea if the hps was on.
View attachment 3636828
View attachment 3636829
The goal is to heat all the greenhouses with geothermal heat.
http://www.hortidaily.com/article/3...nnection-and-network-for-ECW-in-Wieringermeer
They aren't just going for climate neutral either, they are supposed to become power plants.
Electricity saving is a promise LED can already live up to, applying it to plants is another story. White cobs for grow led is ironic and like
@FranJan posted today: "COBs r sooooo dead" "Fuck COBs, I count the days till they die and I'm also counting the days till June so I can upgrade my Veros

. The only people who think COBs are here to stay are the ones with inventory" "Sorry but IMHO COBs are nothing more than a waypoint, they are far from perfect, especially for growing"
Inside information from the Bibled sekt ^^