I will chime in from the perspective of a science teacher
The best science fair projects ask a question and then seek to find an answer to this question by doing an experiment.
Your 1st option would seem to be more of a research project ( write a report) than an actual experiment.
Your 2nd option would have a bunch of great directions you could go as far as performing an experiment. For this reason I would follow that line of thought.
Whichever way you choose be sure to nail down your Question first and then go after ananswer. But both of you have fun with it !
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Biocube 29 est 05/05/08, Koralia 1, 30lbs live rock, ,yellow tail blue damsel, pair cinnamon clowns, baby snowflake eel,Toadstool , metallic green mushroom, assorted zoos , kenya treen
180gall display, 190 pds live rock, virgate rabbitfish,bluejaw trigger, bubblletip anemone,yellow tang, sailfin tang,melanarus wrasse, cloud wrasse,

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