What Is the Difference Between 4000K and 5000K lighting.
Difference between 4000k and 5000k. 5000K is normal for stores office space etc. It causes less eye strain than the use of 5000K or higher lighting. The only difference between 5000k and 6500k is that 5000k is considered morning light.
Because of its reduced blue content 5000K may appear more pleasant and balanced. Bright lighting can make peoples attention and work more positive. Above 5000K Color Temperature.
4000K is normal for warm spaces like living rooms bedrooms etc. Both 5000k and 6500k are great for the vegetative phase flowering phase and fruiting phase. A 5000K LED bulb produces a bright daylight kind of color.
So they are ideal for the general growth of your plants. Lighting we often see in residential use is more relaxed settings are usually 3000K-4000K. 4000K is really the transitional color temperature that begins to turn the warmer yellow of 3000K into a cool white.
4000K is slightly less cool or less white than a 5000K light. Both 4000K and 5000K are the beginning of more white tones within the overall kelvin scale of 1000K to 10000K. In general most warehouse lighting and outdoor lighting is 5000K often called bright white as its a close representation of sunlight.
During mid-day hours direct sunlight will have a color temperature over 5000K and daylight including the entire blue sky will have a color temperature closer to 6500K. A standard 60 W bulb will give a warm glow of about 2700K while most fluorescent lamps have a white light that is mostly neutral of. 4000K appears as a cool white light when viewed on its own but when compared to a 5000K light 4000K looks to contain some yellow.

