I started out with 130 watts over my 75 gallon tank, and it was enough for just
about everything except Lilaeopsis. If you want to grow that, you need a ton
of light.

One problem I ran into, and the reason I eventually put more light over the
tank, was that one light strip is kind of narrow for a 75 gallon tank. I had
to remember to constantly move the light strip around on top of the tank, or
the plants would start to lean visibly toward the light.


Leigh

http://www.fortunecity.com/lavender/halloween/881/