The **data** for nutrient uptake rates were estimated using the Michaelis-Menten equation at the different JSM fertilizer concentrations (Table 4). V max /K m for the BPVD drip-irrigated platform design showed better DIN uptake (NO 3 -1 + NH 4 + ) efficiency when compared to the other two drip-irrigated platform designs, while the submerged control platform (SUB) showed the lowest uptake rate for DIN, (which is peculiar and unexplainable considering the highest biomass productivity was observed for the submerged controls (e.g., 20-30 g m -2 d -1 ). Ulva grown on each of the different drip irrigation-platforms (SD, MLHD and BPVD) exhibited higher overall nutrient uptake than did Ulva biomass grown using the submerged platform controls (SUB). This was found to also be true for nitrate, ammonium, and phosphate nutrients. Ulva cultured on platforms MLHD and SD had higher preference for nitrate uptake, while BPVD tended to have more preference for uptake of ammonium and phosphate. As shown in the kinetic parameters (Table 4), Ulva's maximum uptake rate and half-saturation values for nitrate on the MLHD and SD platforms were similar and closely related to each other (Table 4). Employing linear regression analysis, BPVD showed significantly higher ammonium (p<0.001) uptake rates than the SUB controls (p = 0.034). Uptake rates for PO 4 were significantly higher (p = 0.008) for each of the three drip-irrigation platforms when compared to the submerged (SUB) controls (p = 0.045; Table 4).