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Re: lighting (20 gallon tank)
>Date: Tue, 26 May 1998 19:30:36 -0400
>From: "Guangyan Wang" <lesenw-2 at idt_net>
>Subject: lighting
>
> Could Anyone tell me how many bulb to use on a 20 gallan tank with
>Chroma 50?
>
>
>Thank You
A 15 watt fluorescent tubes should fit on either a 20 Gallon or 20 Gallon High tank.
As posted last week (May 20, 1998):
For fluorescent lighting that extends across the length of the tank (that are 16 to 24 inches
deep), 2-3 watts per gallon is recommended. (Depending on the type of plants you want to grow
and how often you want to trim them.)
1 tube every 3 inches of tank width gives about 3 watts/gallon.
1 tube every 4 inches of tank width gives about 2 watts/gallon.
Standard pet shop lighting, (which is about 1 tube for every 12 inches tank width,)
gives about 3/4 watt/gallon.
Examples:
For 20 Gallon High tank (12 and 1/2 inches wide and length of 24 inches):
4 tubes (15 watts x 4) gives you about 3 watts/gallon.
3 tubes (15 watts x 4) gives you about 2 watts/gallon.
For 55 Gallon tank (12 and 1/2 inches wide and length of 48 inches):
4 tubes (40 watts x 4) gives you about 3 watts/gallon.
3 tubes (40 watts x 3) gives you about 2 watts/gallon.
For 90 Gallon tank (18 inches wide and length of 48 inches):
6 tubes will give you about 3 watts/gallon.
4 tubes will give you about 2 watts/gallon.
---------------
Ron Wozniak Allentown PA, USA
rjwozniak at lucent_com