Java ferns, anubais, some crypts, anachris/najas will likely all grow just fine.
For the future: If I understand correctly, you're using a bulb specially designed "for plants"? If so, those are generally over priced (by a lot) and you can just use a regular flourescent light (from, say, Home Depot) that's between 5500-6700K or so. For example, a "plant bulb" at my petstore costs 25$. The same bulb at a hardware store costs 6$.
A tank that is 4 foot long, 18 inches wide, and 18 inches deep is around 67 gallons. Not 100 gallons. That does make a significant difference in many aspects.