Not so good. One tube? Maybe 20W? Not enough light to do much good. The foliage right at the tip, three inches from the tube, will probably do well, the rest of it, a foot or more from the tube will be too dark. Light that is dimmer than a certain level kills plants. You might not be that dim, but full sun trees aren't going to be happy. Stick to 12-14 hours light each day, 10-12 hours if you get a really intense light source.

Get maybe four or six tubes like that and arrange them vertically around the plants. The "arc" in your reflector might need to be more pronouned. Try to arrange it so that it produces an obvious bright strip on a surface a couple of feet away, so you can just light the plants and not the rest of the room.

Or get a more intense light source with a really good reflector and mount it a foot or two above the plants. Maybe a couple of 42W CFLs.

CFL? Are these the compact floresents now starting to take market share from incadesent?

Being a broke student who will be moving at the end of February I would like to keep new purchases and spending to a minimum so I used what I had on hand. I also live in a 300 sq ft studio apartment so space is at a premium.

I have a set of halegon under cabinet lighting which can be moved and set up for these. Each hockey puck style light houses a 20 W bulb. I am willing to move at most three down as they also serve as my overhead lighting.

More info on the setup:
They are in front of a 3'x4' window facing WSW. During day light hours the window usually allows enough light in to easily read from on my couch 3 feet away.