I have two QB120 HLG lights with reflective sides around the back and sides of the sub irrigated bin. I measured the light intensity, which varied between 30k and 39k lux. Normal sunlight is ~100 lux, so on average I’m operating with 1/3 power of the sun. However, I do have the lights on 15 hours a day without cloud cover so maybe closer to half the DLI of the sun or a tomato plant that gets half a day of sun. I also added a fan to keep some circulation and hopefully wind pollinate the tomatoes.
