Thanks a lot Sooled, what do you think about the 5000k is it necesary with 4 cxb3590 3500k, some post are old before the cxb3590 3500k, and they add the 5000k for siblings and veg , but most new post are just CXB3590 3000k or 3500k , but they dont add the 5000k.. will make a diference or not...