How many watts is the light unit?
What are the tank dimensions (length x width x height)?
The tank in the picture doesn't look that bright to me. I would say it's low to medium light and definitely not bright light. Tanks with bright light will have shadows on the bottom from items in the tank.
The temperature (Kelvin rating or K rating) of light varies. Your light is about 4100K, which has more red and less blue light. Sunlight varies between 5500 & 6500K depending where on Earth you are located at a certain time of year, and the time of day. In the tropics during the middle of the day it's close to 6500K. In the morning and evening in the tropics it's lower (around 5500K). At latitudes away from the equator during the day in late autumn, winter or early spring, the temperature reduces to 5500K. In the morning and evening it is lower.
Blue light from the sun tends to increase the Kelvin rating to around 6500K and occurs during the middle of the day (between 10am & 4pm) during summer in most places. Outside of those hours (sunrise or sunset) the blue light has mostly gone and we get more red and yellow light and the Kelvin rating drops. This is why the sky looks yellow at sunrise and sunset (lack of blue light).
Lights with a Kelvin rating around 3000K tend to look pale yellow and are sold as warm white lights. They have very little (if any) blue light in them and usually have yellow and red light. They make the water look yellow (like it needs a water change).
Lights with a Kelvin rating around 4000-4500K tend to look more pink or red and have very little blue light. The water will sometimes look pale pink or yellow under these types of light.
Lights with a Kelvin rating around 6500K tend to look white and the water in the aquarium will look clear. These lights are sold as cool white lights.
Lights that have a K rating of 8000K+ have a lot more blue light and less red and can make the water look blue. Generally the higher the number, the more blue and ultra-violet light that is produced. They do LED lights with UV light in them. These are normally for marine/ coral tanks or people growing plants indoors.
Plants need equal parts of blue and red light to grow well. They also like yellow, green and white light but red and blue are the two main colours that affect growth.
You can have the lights on for 12 hours a day and it is fine as long as the tank doesn't go green from algae. The following link has basic information on aquarium plants, including lighting times.
www.fishforums.net
What are the tank dimensions (length x width x height)?
The tank in the picture doesn't look that bright to me. I would say it's low to medium light and definitely not bright light. Tanks with bright light will have shadows on the bottom from items in the tank.
The temperature (Kelvin rating or K rating) of light varies. Your light is about 4100K, which has more red and less blue light. Sunlight varies between 5500 & 6500K depending where on Earth you are located at a certain time of year, and the time of day. In the tropics during the middle of the day it's close to 6500K. In the morning and evening in the tropics it's lower (around 5500K). At latitudes away from the equator during the day in late autumn, winter or early spring, the temperature reduces to 5500K. In the morning and evening it is lower.
Blue light from the sun tends to increase the Kelvin rating to around 6500K and occurs during the middle of the day (between 10am & 4pm) during summer in most places. Outside of those hours (sunrise or sunset) the blue light has mostly gone and we get more red and yellow light and the Kelvin rating drops. This is why the sky looks yellow at sunrise and sunset (lack of blue light).
Lights with a Kelvin rating around 3000K tend to look pale yellow and are sold as warm white lights. They have very little (if any) blue light in them and usually have yellow and red light. They make the water look yellow (like it needs a water change).
Lights with a Kelvin rating around 4000-4500K tend to look more pink or red and have very little blue light. The water will sometimes look pale pink or yellow under these types of light.
Lights with a Kelvin rating around 6500K tend to look white and the water in the aquarium will look clear. These lights are sold as cool white lights.
Lights that have a K rating of 8000K+ have a lot more blue light and less red and can make the water look blue. Generally the higher the number, the more blue and ultra-violet light that is produced. They do LED lights with UV light in them. These are normally for marine/ coral tanks or people growing plants indoors.
Plants need equal parts of blue and red light to grow well. They also like yellow, green and white light but red and blue are the two main colours that affect growth.
You can have the lights on for 12 hours a day and it is fine as long as the tank doesn't go green from algae. The following link has basic information on aquarium plants, including lighting times.
Aquarium Plants 1.01
AQUARIUM PLANTS 1.01 TURNING LIGHTS ON AND OFF Stress from tank lights coming on when the room is dark can be an issue. Fish don't have eyelids and don't tolerate going from complete dark to bright light (or vice versa) instantly. In the morning open the curtains or turn the room light on at...
www.fishforums.net
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