I'm currently doing research on different methods for large scale production of spirulina in New Mexico. Does anyone know what the average biomass concentration (g/L) is of spirulina in raceway ponds (with a 30cm depth). And the average biomass productivity (g/L/d) of spirulina in raceway ponds. Also, am I right to assume that biomass concentration and harvest concentration are equal? If anyone can help me with this I would be very grateful, thank you in advance