LED's are great but for

THE BEST DAMN LIGHT BULB IN THE WORLD
that immitates natural sunlight the best - and is used in the Smithsonian Air and Space Museum-

is mercury free and uses a tiny microwave base that stimulates Sodium atoms in the bulb.

It procuces 99% sunshine with so little heat you can touch it while on.

It was invented down the road in Gaithersburg 10 years ago.

Why it is not used domestically is both strange and silly.

Its use for indoor agriculture is second to none.