Aqueminianswered grow question 3 years ago Your ladies are beautiful. You have been doing good so far! I like to hang my Mars Hydro lights between 20-24 for veg, and 18-24 for flowering depending on canopy and if the plants can handle the intensity. I never dim my lights I only raise them and Lower them. I've seen people hand them high to purposely get some stretch out of the plants. But really it's all strain dependent in my opinion. I always try to get as close as I can without burning them with heat or light.