Experimentally modeling the habitability of extreme ocean world conditions, such as those on Jupiter's moon: Europa, would benefit from integrated microbe-virus model studies to provide both a microbial model and a virus capable of nutrient cycling. This work experimentally probes the microbe/virus combination Saci/STIV as a potential microbial model for habitability studies of Europa's ice-ocean interface in subsurface lakes with implications for habitats with extreme conditions and fluid mixin