Lights in flower

Hi @Lucifer666 i use mars hydro sp250 and i usually have 30-40cm from the top of the plants in flowering. always with a fan blowing wind between the top of the plant and the Led so as not to burn. to check if the light doesn’t burn your plant at a certain height put your hand outstretched with your palm down just above the part of the plant closest to the led and wait 1-2 minutes, if you get burned or the heat leaves your hand uncomfortable the plant will feel the same. good luck bro 👍🙏