My daughter did a similar 1 with tomato plants 2 grown in hydroponic and 2 grown in an earthbox (soil). She received the highest grade possible for the project taking pictures from start till finished a couple months later.
She made chart with pictures comparing the 2 methods .
Started with planting both.
Took measurements and pics weekly.
How much fertilizer each receives.
How much fruit produced between the 2.
Size difference of fruit.
Color differences
Health of each plant.
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