Yes it will make a huge difference to the plant as different Kelvin ranges simulate different times at different regions in different parts of the world. For instance, a range that simulates the light of an afternoon at the equator. Every plant has a desired K range. A low light plant will pretty much easily adapt to any light conditions. The kelvin range will depend on what you want to grow or maintain efficiently. As you get into saltwater aquariums, K ranges become even more important.