EGSilveranswered grow question 5 years ago Hey,
I cannot find much information about your light.
I can give you some guidelines, I've been been using cbx3590 at 250W and keeping them at 40cm (16inch).
I found this video (https://youtu.be/FrZxbwGFdso) for you about a guy using a similar light then yours, you might be able to determine the correct height from there.
Try to experiment a bit just use some logic.