What is a perfect hypothesis for this experiment?

you want to test if the color of light you give a plant affects its rate of photosynthesis over a 24 hour period. you have 4 different colored light bulbs(green,red,yellow,blue) & one regular light bulb. you also have 100 elodea plants, 5 aquariums, w/ 20 plants ineach aquarium. you also have electronic probes to measure the amount of CO2 gas that is in the water. 10 of your employeesa are also running the exact experiment &will bring their data for you to compile.