"David Burton" wrote in message
. uk...
All,

I have been going through the lighting conundrum for marine tanks. I am
putting in another new 420 litre tank and I am having problems working out
the best lighting scenario.

At present I am looking into an Arcadia Overtank Luminaire which has 4 new
T5 fluorescent tubes, each of 54 Watts - what do you think?



I am using T-5 bulbs and have been very happy with them- I have 8x54w on a
90 gallon 24" deep tank.
Could you maybe fit more bulbs in there?

They are kind of a new technology here in the States, and many folks have no
experience with them and tend to simply not know how effective they can be.
The key with this type of bulb is getting the correct reflectors, but once
you do that you can grow most anything under them.
If the tank is very deep (that is 110 gallons?) you will have to keep your
light loving SPS in the upper half.


--
Toni
http://www.cearbhaill.com/reef.htm.