In this greenhouse corn study, both Vitazyme and concentrated seawater, alone or in combination, boosted plant dry weight above the control, though only the 30:70 and 70:30 combinations did so significantly (+15%). While the 50:50 Vitazyme:Seawater treatment gave an unexpected reduction in increase in dry weight, this value was not significantly different than any of the other Vitazyme and seawater treatments. The double rate at 50:50 Vitazyme:Seawater increased yield by 9%, but Cold Start at 13 oz/acre gave the highest yield increase of all: 26%. Though all Vitazyme, seawater, and Cold Start treatments produced taller corn plants than did the control, none of these increases were significant.