Lighting Flashcards
What are 4 main types of lighting
T5’s
-> T8’s
-> LED
-> Metal Halide
What type of lighting do freshwater fish require
T8
What light do coral require
T5
What light can become very hot but are much better than others
Metal halide they shouldn’t be kept in the hood of the tank
What are the 2 functions of visible light
-> Allows fish to see properly
-> control photosynthesis from plants and photsynthetic corals
What does the light spectrum range between
390- 700nm
What factors affect light intensity
Sun’s position, earths rotation, geographic location, ozone layer, clouds, air humidity, elevation
When is reflection of the water surface much greater in the day?
Early mornings and late afternoons
When does maximum light intensity occur
Midday
What is a spectrum graph
Gives an indication of the power of various wavelengths of light that’s produced by the bulb
How is colour temperature measured and what does it relate to
It’s measures in Kelvin (K)
Relates to the colour of black body objects heated to that temperature
What does LUX mean
A unit of illumination which indicates the amount of light falling on a given area
What is a lumen
A unit of measurement that delivers the amount of brightness originating from a light source
What measures the lumen light
Photo optic sensors
What things need to be considered when choosing lighting for aquarium
-> live planted?
-> Corals present?
-> Lighting of the room
-> colours of the fish
-> cost to buy/ run and replace
