Lighting questions

[Chafire]

Hello All,

I am trying to understand aquarium lighting more clearly and have a couple questions regarding it:

First off in my 10 gallon planted aquarium I have two of these bulbs Bright Effects at Lowe's: Daylight 40-Watt Replacement CFL Twist Bulb and am wondering if I should up my WPG? currently growing in my tank is just Riccia and dwarf hairgrass.

The hood I use is this:

I could put up my WPG to 30 if I went with 15 watt bulbs.

Also is it better to use Flourescent T-bulbs or the spiral screw in types like I'm currently using?

And are Full spectrum light bulbs fine to use for aquariums?, I dont see why not.

I realize that there are much better light bulbs out there but they come at a cost and I'm not trying to break the bank on this 10 gallon tank I'm just using it to get used to growing plants/aquascaping.

Thanks
~Graham