MrStinkyanswered grow question 3 years ago I have a buddy uses them - at 18-24 inches on full power it will just melt your plants no matter what, you need to keep them badboys turned down low and lifted higher up, especially in a tent cause they reflect everything back so your 385 + scatter, you have to focus on DLI and timings more for them beasts than smaller units. I wouldnt do any leaf spraying with them lighting you up either, if you are.