Compact fluorescents

Subject: Compact fluorescents

>  I've added a new wooden canopy to my 100 gallon planted tank an
> using the four 48" fluorescents I had hanging above the tank, I'
> about using all compact fluoresents inside the hood. I want to h
> penetration of light to the bottom of the tank and the nice effe
> comes with high intenity lighting. My aquarium is 20" deep. I do
> go as far as MH lighting, I think that is over kill. I was plani
> PowerCompact 6700K Ultra-Daylight bulbs, how many ?

What is the wattage?

> So, is this a good idea or not ?

You won't get any more light into the tank than you would with the 
same wattage of NO florescents.  The only advantage is that you 
can pack more in.

> Will I get all the color spectum the plants need ?

Depends on the spectral curve of the bulbs you choose.  That said, 
if the light is bright enough, the plants will most likely do fine 

> I have been playing around with one small compact fluoresent uni
> Its has two OSRAM 9w 50K bulbs in it. 

I light my 2 1/2G tank with a 13W compact flourescent.  You'll 
need a boat load at that size to light a 100G tank!

Karen Randall
Aquatic Gardeners Assoc.
Boston, MA