kkushanswered grow question 3y ago Hey buddy, greetings :D It's been a long time since we last met.. At this stage, I think keeping it at 25%-30% is enough for 45-50 cm. You can bring it to that level based on the response of the small leaves until the flowering starts.. By the 3rd week of flowering, you know you'll start to see the flowers clearly, during this process, you should look for around 65%-75% at about 50-56 cm, again depending on the response of the leaves.. After the 6th week, you can raise it between 75 and 100, but since there probably won't be any leaf response, it's likely you'll reach 100.. The distance should be as wide as the area can cover, but you need to keep enough to ensure all the flowers are effective.. It's a rough estimate, you know.. Good luck :D