Salinity in the tanks was kept at 35. The two tanks of each system were connected by two plastic pipes 1.27 cm in diameter, one at the top and one at the bottom, through which the water exchange occurred Fig.
Los tanques de cada sistema estaban conectados por dos tubos de plástico 1.27 cm de diámetro, uno en la parte superior y otro en la parte inferior, por donde se llevó a cabo el intercambio de agua Fig.