I have a small operation in NC where I was using sodium lamps, one of the problems was the heat, so I had to send the fixture far from the canopy or the heat would kill the plants. With these I have a large footprint for flowering, when I place the lamp 2 feet from the canopy and in less than 15 days I raise it to 3 feet or dim it. Easy operation, clean and even looks nice. Very satisfied.
This lamp is excellent, very brilliant, has full spectrum and covers an area about 35 SqFt when placed 3 ft above the canopy. Is so intense that can't look at it.
we replaced the sodium lights with these LED and the effect of light quality on our plant growth was a game changer. We are going to order more as soon as our budget allows.