Monday, December 15, 2008

Lighting

Since photosynthesis takes place in the presence of light, light is a necessity for healthy
plants. Natural sunlight is made up of a number of light waves that have different
wavelengths. The plant pigment chlorophyll will absorb only certain light waves.
Sunlight will promote the growth of algae. Long exposure to sunlight will also heat up
the water. Artificial light is therefore more advisable for plants growing in a aquarium.
Full spectrum or broad spectrum fluorescent light is best suited for plant growth.
Aquariums usually need about 1.5 watts of light per gallon of water and about 12 hours of
light per day. Of course, if your aquarium is deep, you may need additional wattage, and
need to keep the light on for longer hours. Using light colored gravel is a good way to
create a light bottom for a deep aquarium.
The wattage of light required for healthy growth in plants is also species dependent.
Some plants, like the Anubias, Java Fern and Java Moss, require only low to moderate
lighting. So, a single fluorescent tube will give enough light for these plants. The Water
Wisteria, the Indian Fern, the Water Lily, and the Waterweed are some plants that need
bright light. These plants will require at least one additional fluorescent tube to survive
and flourish. Some species like the Bacopa and the Cabomba require extra strong light.
These plants are of course not very suitable for beginners

No comments:

Post a Comment