I have a 40G aquarium that measures 36" long by 15" wide. I'm looking for an inexpensive hood/light system for it and notice that there does'nt seem to be much selection out there for this size tank. I'm setting up the tank as a S. American biotype and only need enough lighting to support low light plants such as java fern. I've seen Progresso hoods for around 35 bucks but it appears they only have one 24" bulb. Probably not enough to support even low light plants. Any suggestions?