lighting the 125

From: Tom Roberts <troberts at getnet_com>
Date: Fri, 2 Aug 1996 18:14:03 -0700 (MST)
Subject: Need Lighting Suggestions For 125 Gallon Tank

I am in the process of setting up 125 gallon plant tank.  It is 72 inches
long, 18 inches wide, & 20 inches tall.  I was thinking of using 8
T8 bulbs staggared which would give me a little over 2 Watts per gallon.
Would it be more cost effective in the long run to use a 250W metal
setup?  Would one MH bulb provide enough light to cover the entire length
the tank.  What kind of lighting configuration do most people use with
size tank?  I am open to any and all suggestions.  

        Thanks in Advance

        Tom Roberts
        Phoenix, Arizona

You had inquired about lighting a 125 gallon plant tank. I would say that
you would be better served to cut down on the number of bulbs and go with
either that MH setup @ 250 watt you suggested, or consider purchasing a
VHO ballast and running them. I have seen setups with only one 250 watt
MH done on a tank your size and it has been successful, but I would
probably say it will all really depend on what plants you decide to go
with. You could also consider doing 2 of the 175 watt MH pendants for a
more uniform light distribution. I am a proponent of the " more light is
better school".....    I think you would find that using standard bulbs
in the quantity you mentioned would still only be marginal and very
cumbersome. I have a 175 MH supplemented with VHO aquasuns on my 55
gallon plant tank, and it works well for me. ( Now if I could only find a
bigger CO2 cylinder.....)  You do have many options, just remember that
you need to keep everything balanced. More light = more CO2, possibly
more nutrients,etc.   Good luck, and I am sure that you will get many
other good responses to this note as well.

					Mike T.
					( visiting from the Fishnet