by Mick e. t. » 2006-01-30 12:12
I think a point has been missed re. lighting. It is not only the length of time you you have your tank/s illuminated, the strength of illumination also has to be taken into consideration. I am sure, or I would like to think that the majority are aware of this fact. The tables below will throw some illumination on the required lighting for tank size. Please note that this is a general guide. For those who have fish/plants that require specialist care then please research for the correct application of lights.
<div align=center> LIGHTING FOR VARIOUS
PLANTS</div>
Appearance................Intensity................Suitable for
Subdued....................<500 lux..................Cryptocoryne, Vesiclaria
Moderate..................500 -1,000 lux..........Anubias, Echinodorus, Nomophila, Sagittaria
Quite bright..............1,000 - 1,500 lux.......Bacopa, Ceratoperis, Egeria, Ludwiga
Bright.......................>1,500 lux.................Cabomba, Hygrophila, Microsorium, Myricophyllum, Synnema, Vallisneria
Very bright...............6,000 -8,000 lux........Anemones
Extremely bright......12,000 - 16,000 lux....Macroalgae (e.g. Caulerpa)
Ultra bright..............15,000 - 20,000 lux....Most corals (except for most red corals and sponges, which prefer shade)
For those not into lux then you might find the next table easier to understand.
TANK SIZE.................Surface area.............Volume of water...............Light
(LxDxW)
61x46x38..................2,322 sq cm...............106 litres.........................45 watt
24x18x15 in..............360 sq in....................23 gallons
91x38x30 cm.............2,787 sq cm...............106 litres.........................50 watt
36x15x12..................432 sq in....................23 gallons
91x46x38 cm.............3,484 sq cm...............159 litres.........................80 watt
36x18x15 in...............504 sq in....................35 gallons
122x46x38 cm............4,654 sq cm...............212 litres.........................120 watt
48x18x15 in...............720 sq in....................47 gallons
122x61x38 cm............4,654 sq cm...............283 litres.........................160 watt
48x24x15 in................720 sq in...................62 gallons
By no means my calculations but presented as what can be found through research. Hope it helps,
Mick e. t.
Life aint black and white, it's full of colour