Two different raceway ponds, fed with wastewater and fertilizers (Fig. 2), have been sampled three times per week for the last 9 months. Samples are sent periodically to ICM-CSIC for specific chemical and molecular analyses. Researchers from both institutions discussed all the practicalities about the raceways design, functioning, algal community sampling and limitations inherent to the technology in order to optimize samplings and produce high quality datasets. The visit was very fruitful for both teams and PRODIGIO project will benefit from the exchange of knowledge from researchers with such diverse range of scientific backgrounds, from bioprocess engineering to theoretical ecology.