Try 55 watt or higher PL bulbs. High output rated at above 90 lumens per watt (55watt). They also have a more efficient form for what you want to do. And you can get em' in small sizes, at higher (80,90watt) wattages. But the cfls are more plug n play. I was also wondering about them. I'm also setting up a small dual 22 galloon rubbermaid joint. But I think that i'll go with a 150watt hps though.

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[SIGPIC]Planting the seeds of destruction. One by one.