That’s some good info. I did a experiment with one hlg100 on one small plant to see what it does. It ran its whole life in there except last week I moved it under 600w hortilux blue because I needed to take down my 3x3 but here’s my first led grow it gets chopped this week
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What I mean by happy place, is after years of using HPS all I knew was that if I had things in the tent a certain way e.g. temperature, moisture in the air, ventilation, type of hood/reflector etc, then all would go well and i would get very pleasing results. I later leaned this perfect balance of factors was having correct Relative Humidity, Temperature, and Leaf Temperature, and was called Vapor Pressure Deficit or VPD.
After switching to LED it took a while to find the balance again because I had changed the temperature (less heat from the LED), humidity (temperature affecting humidity) and had different leaf temperature (no IR in LED's I was using). So had unwittingly altered the three contributing factors that were for years getting me to my happy place. When I first used LED I didn't change anything and I couldn't routinely get to quite the same level as before so I reverted to HPS until I read up a bit more on LED's, discovered what VPD was and how to implement it, tried LED's again using the new knowledge, and now a few years later am regularly exceeding prior yields.
One big factor for me is the wall to wall spread available using bar-style LED's. I will never go back to single point-source lighting. With the bar-style lights you can dim them down but run them closer to canopy when needed, and still retain proper PPF levels. I build my own lights now using many LED strips run about 6" or less above a flat canopy and peak around 900+ PPF in a 4x4 for about 300W+-ish draw.