Thanks, now I know why the Wisteria is dying. This plant needs light, and a desk lamp will not provide it. A light over the tank, as in the new hood you mention, is better. But before I get to that, I would forget the Wisteria. You have a lot of fast-growing and large plants for a 10g. You do realize the Jungle Val (Giant Vallisneria) will get large, like 3-4+ feet long leaves? In a 10g I would have the corkscrew vallisneria, check out the profile (click on the shaded name, both valls are in our profiles now) if you have basic, harder water; pygmy chain sword is another good plant and not fussy about water--if the Pennywort is fine, so will the sword be.
In a 10g, the Brazilian Pennywort will be fine, with regular trimming. It also makes a superb floating plant. Again, check our profile.
To the light. The best bulb would be a compact fluorescent daylight with a kelvin rating of 6500K. GE make these, you can buy them in hardware stores for a couple dollars. Get the 10w Daylight, 6500K bulb, one or two (fixture probably has two bulbs?). Attached is a photo of my 10g with two 10w GE Daylight bulbs. I have Pennywort floating in this tank, and tons of pygmy chain sword.
Fertilizer is the other issue. Wisteria being fast growing needs a lot of "food" or nutrients. Some are present from tap water (calcium, iron perhaps, etc), some from organics. But not likely anywhere enough for such fast growing plants and with so many in a small tank, nutrients will be scarce anyway. A good investment, along with the bulbs, would be a small bottle of Flourish Comprehensive Supplement. Once a week, a 1/4 teaspoon in a 10g is all you use. It will make quite a difference.