Aquarium lighting serves two main purposes, it allows you to view your fish, and it is vital for growing healthy plants. If you do not intend to glow plants in your aquarium then you can pick lighting that will show up your fishes colours. A warmer light may be best for this; it will help create a more tropical atmosphere. Plants do best in blue-green and orange-red light.
|The right amount of light for plants is essential. The final balance between the brightness and the illumination time is best found by trial and error. As a general rule of thumb you divide the number of litres of water by 3. For an aquarium of 150l, about 50 watts of lighting are needed. The aquarium should be lit for around 10 to 15 hours a day. The best way to do this is to use a timer switch. You can by these at any diy store. For your own viewing pleasure it’s best to set the timer around the time you’ll be in to view the fish.